OK, my word isn't good enough, so here's an explanation written in nerdese: http://home.comcast.net/~astrophoto/Articles/Dew.htm It's on the Web, so it MUST be true. All you have to do is warm the optics above the dew point. That temperature varies dependant on humidity. You don't need "warm" optics to prevent dew or frost. In most cases, the optics are still cool to the touch. Mat is on the right track with his dew chaser project. Those of you who are in need should seriously consider attending his next ATM session. A properly designed dew chaser won't consume a lot of current, but will add hours to your observing/imaging sessions when the relative humidity is high. When my work schedule allows, I'll search the S&T archives for some articles they've printed over the years on active and passive dew/frost prevention. I think I get a few days off in late December. :-(
If it is true when it is on the web, then I must have missed this night. http://earthsky.org/astronomy-essentials/will-mars-appear-as-large-as-a-full... It seems a shame that it will be nearly two years before this rumor hits my inbox again.
Date: Mon, 7 Nov 2011 18:11:37 -0700 From: chuck.hards@gmail.com To: utah-astronomy@mailman.xmission.com Subject: [Utah-astronomy] Dew/Frost prevention
OK, my word isn't good enough, so here's an explanation written in nerdese:
http://home.comcast.net/~astrophoto/Articles/Dew.htm
It's on the Web, so it MUST be true.
I've posted this link and I still think this is the best alternative: http://www.dewbuster.com/heaters/heaters.html I've made several of these and bought a Thousand Oaks controller for $109.00 plus $10.00. They've worked in the backyard though I had to replace some parts that were bad on one part. There is also the 12 volt hair dryer. From what I've read online they barely heat the air but that is all that is needed. Here is one for $18.00 plus $10.00 shipping. I picked this one because the handle doesn't collapse and that seems to be an issue for how well one of these last. http://www.amazon.com/Hand-Held-Shield-Defroster-Dryer/dp/B004MAV24C/ref=pd_... Then again, I could use my Coleman SportCat Heater http://www.walmart.com/ip/Coleman-SportCat-Catalytic-Heater/13228604 so the heat it generates just floats up if I place it near the scope. On Mon, Nov 7, 2011 at 6:11 PM, Chuck Hards <chuck.hards@gmail.com> wrote:
OK, my word isn't good enough, so here's an explanation written in nerdese:
http://home.comcast.net/~astrophoto/Articles/Dew.htm
It's on the Web, so it MUST be true.
All you have to do is warm the optics above the dew point. That temperature varies dependant on humidity. You don't need "warm" optics to prevent dew or frost.
In most cases, the optics are still cool to the touch.
Mat is on the right track with his dew chaser project. Those of you who are in need should seriously consider attending his next ATM session. A properly designed dew chaser won't consume a lot of current, but will add hours to your observing/imaging sessions when the relative humidity is high.
When my work schedule allows, I'll search the S&T archives for some articles they've printed over the years on active and passive dew/frost prevention.
I think I get a few days off in late December. :-(
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
-- Jay Eads
Well done, gents. My time here has not been wasted. I will save Sodom if thou can produce but ten good men. ;-)
Thanks for the links, Jay! -- Joe ________________________________ From: Jay Eads <jayleads@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Monday, November 7, 2011 6:57 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention I've posted this link and I still think this is the best alternative: http://www.dewbuster.com/heaters/heaters.html I've made several of these and bought a Thousand Oaks controller for $109.00 plus $10.00. They've worked in the backyard though I had to replace some parts that were bad on one part. There is also the 12 volt hair dryer. From what I've read online they barely heat the air but that is all that is needed. Here is one for $18.00 plus $10.00 shipping. I picked this one because the handle doesn't collapse and that seems to be an issue for how well one of these last. http://www.amazon.com/Hand-Held-Shield-Defroster-Dryer/dp/B004MAV24C/ref=pd_... Then again, I could use my Coleman SportCat Heater http://www.walmart.com/ip/Coleman-SportCat-Catalytic-Heater/13228604 so the heat it generates just floats up if I place it near the scope. On Mon, Nov 7, 2011 at 6:11 PM, Chuck Hards <chuck.hards@gmail.com> wrote:
OK, my word isn't good enough, so here's an explanation written in nerdese:
http://home.comcast.net/~astrophoto/Articles/Dew.htm
It's on the Web, so it MUST be true.
All you have to do is warm the optics above the dew point. That temperature varies dependant on humidity. You don't need "warm" optics to prevent dew or frost.
In most cases, the optics are still cool to the touch.
Mat is on the right track with his dew chaser project. Those of you who are in need should seriously consider attending his next ATM session. A properly designed dew chaser won't consume a lot of current, but will add hours to your observing/imaging sessions when the relative humidity is high.
When my work schedule allows, I'll search the S&T archives for some articles they've printed over the years on active and passive dew/frost prevention.
I think I get a few days off in late December. :-(
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
-- Jay Eads _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
The product is for windshields, IE it is used before your car defroster heats up. FOr astronomy you need to heat the objective and eyepiece, or the frost/dew will quickly return.
I've posted this link and I still think this is the best alternative:
http://www.dewbuster.com/heaters/heaters.html
I've made several of these and bought a Thousand Oaks controller for $109.00 plus $10.00. They've worked in the backyard though I had to replace some parts that were bad on one part.
There is also the 12 volt hair dryer. From what I've read online they barely heat the air but that is all that is needed. Here is one for $18.00 plus $10.00 shipping. I picked this one because the handle doesn't collapse and that seems to be an issue for how well one of these last.
http://www.amazon.com/Hand-Held-Shield-Defroster-Dryer/dp/B004MAV24C/ref=pd_...
Then again, I could use my Coleman SportCat Heater http://www.walmart.com/ip/Coleman-SportCat-Catalytic-Heater/13228604 so the heat it generates just floats up if I place it near the scope.
On Mon, Nov 7, 2011 at 6:11 PM, Chuck Hards <chuck.hards@gmail.com> wrote:
OK, my word isn't good enough, so here's an explanation written in nerdese:
http://home.comcast.net/~astrophoto/Articles/Dew.htm
It's on the Web, so it MUST be true.
All you have to do is warm the optics above the dew point. That temperature varies dependant on humidity. You don't need "warm" optics to prevent dew or frost.
In most cases, the optics are still cool to the touch.
Mat is on the right track with his dew chaser project. Those of you who are in need should seriously consider attending his next ATM session. A properly designed dew chaser won't consume a lot of current, but will add hours to your observing/imaging sessions when the relative humidity is high.
When my work schedule allows, I'll search the S&T archives for some articles they've printed over the years on active and passive dew/frost prevention.
I think I get a few days off in late December. :-(
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
-- Jay Eads _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Whoa, hold on there Chuck. I'm not on a dew chaser project. That was only discussed as something some people were talking about doing at the ATM sessions. There are some web articles that Jay referenced a while back that discussed dew zappers in detail. Most of those were plans for the heating element, you still need to make/buy a controller. While dew zappers are good ideas, for our mostly dry Utah air, I feel that passive dew prevention is mostly enough. Then again, I don't own a SCT or other design that have large corrector plates at the front. Those are really prone to loosing heat fast and dewing up. A large dew cap would be my first choice on those type of telescopes. Then if they still dew up, go on to more aggressive measures. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Chuck Hards Sent: Monday, November 07, 2011 8:12 PM To: Utah Astronomy Subject: [Utah-astronomy] Dew/Frost prevention OK, my word isn't good enough, so here's an explanation written in nerdese: http://home.comcast.net/~astrophoto/Articles/Dew.htm It's on the Web, so it MUST be true. All you have to do is warm the optics above the dew point. That temperature varies dependant on humidity. You don't need "warm" optics to prevent dew or frost. In most cases, the optics are still cool to the touch. Mat is on the right track with his dew chaser project. Those of you who are in need should seriously consider attending his next ATM session. A properly designed dew chaser won't consume a lot of current, but will add hours to your observing/imaging sessions when the relative humidity is high. When my work schedule allows, I'll search the S&T archives for some articles they've printed over the years on active and passive dew/frost prevention. I think I get a few days off in late December. :-( _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php ---------------------------------------------------------------------------- This message and any included attachments are from Siemens Medical Solutions and are intended only for the addressee(s). The information contained herein may include trade secrets or privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you received this message in error, or have reason to believe you are not authorized to receive it, please promptly delete this message and notify the sender by e-mail with a copy to Central.SecurityOffice@siemens.com Thank you
On 11/8/11, Hutchings, Mat (H USA) <mat.hutchings@siemens.com> wrote:
While dew zappers are good ideas, for our mostly dry Utah air, I feel that passive dew prevention is mostly enough. Then again, I don't own a SCT or other design that have large corrector plates at the front. Those are really prone to loosing heat fast and dewing up.
Sorry I mis-spoke, Mat, I was under the impression several folks in your group were actively working on dew zappers at your place. Joe owns a SCT, and yes, those and the refractor owners are the ones who need the active dew/frost prevention, especially the imagers. It's simply never been a problem for me, but then I've been almost exclusively a convential-tube Newtonian user for most of my life. That amounts to one heckuva long dewcap. Seems like no-one on the list wants to buy the commercial dew preventers. The prices aren't bad, and you can get elements sized for everything from eyepieces to finders to objectives up to 14", from what I've seen.
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe ________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Tuesday, November 8, 2011 9:53 AM Subject: Re: [Utah-astronomy] Dew/Frost prevention On 11/8/11, Hutchings, Mat (H USA) <mat.hutchings@siemens.com> wrote:
While dew zappers are good ideas, for our mostly dry Utah air, I feel that passive dew prevention is mostly enough. Then again, I don't own a SCT or other design that have large corrector plates at the front. Those are really prone to loosing heat fast and dewing up.
Sorry I mis-spoke, Mat, I was under the impression several folks in your group were actively working on dew zappers at your place. Joe owns a SCT, and yes, those and the refractor owners are the ones who need the active dew/frost prevention, especially the imagers. It's simply never been a problem for me, but then I've been almost exclusively a convential-tube Newtonian user for most of my life. That amounts to one heckuva long dewcap. Seems like no-one on the list wants to buy the commercial dew preventers. The prices aren't bad, and you can get elements sized for everything from eyepieces to finders to objectives up to 14", from what I've seen. _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
On 11/9/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe
Do you use a dewcap? Per Patrick's post, one about two tube diameters long can go a long way to keeping your corrector plate clear.
for extreme conditions. a heated dew cap, heat strips around objective and eyepiece, and hair dryer are probably all needed.
On 11/9/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe
Do you use a dewcap? Per Patrick's post, one about two tube diameters long can go a long way to keeping your corrector plate clear.
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Mine would have to be two feet long, and I would need to make sure it didn't stick up over the guidescope or throw the telescope off balance. Once I tried with a homemade one, stiff construction paper, but I had so much trouble keeping it taped together that it wasn't worthwhile. But I had put it together in the dark while observing. I bet if I made one at home it would work better. Thanks, Joe ________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 11:53 AM Subject: Re: [Utah-astronomy] Dew/Frost prevention On 11/9/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe
Do you use a dewcap? Per Patrick's post, one about two tube diameters long can go a long way to keeping your corrector plate clear. _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
What about a sheet a plastic? You may be able to role that into a tube, considering the diameter of your scope. Of cours, that would have be a pretty long sheet of plastic. ----- Original Message ----- From: "Joe Bauman" <josephmbauman@yahoo.com> To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 12:47:57 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention Mine would have to be two feet long, and I would need to make sure it didn't stick up over the guidescope or throw the telescope off balance. Once I tried with a homemade one, stiff construction paper, but I had so much trouble keeping it taped together that it wasn't worthwhile. But I had put it together in the dark while observing. I bet if I made one at home it would work better. Thanks, Joe ________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 11:53 AM Subject: Re: [Utah-astronomy] Dew/Frost prevention On 11/9/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe
Do you use a dewcap? Per Patrick's post, one about two tube diameters long can go a long way to keeping your corrector plate clear. _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
One of the problems I had with the construction paper was sagging -- that might happen with plastic too, but I don't know. Thanks, Joe ________________________________ From: "jcarman6@q.com" <jcarman6@q.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 1:29 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention What about a sheet a plastic? You may be able to role that into a tube, considering the diameter of your scope. Of cours, that would have be a pretty long sheet of plastic. ----- Original Message ----- From: "Joe Bauman" <josephmbauman@yahoo.com> To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 12:47:57 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention Mine would have to be two feet long, and I would need to make sure it didn't stick up over the guidescope or throw the telescope off balance. Once I tried with a homemade one, stiff construction paper, but I had so much trouble keeping it taped together that it wasn't worthwhile. But I had put it together in the dark while observing. I bet if I made one at home it would work better. Thanks, Joe ________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 11:53 AM Subject: Re: [Utah-astronomy] Dew/Frost prevention On 11/9/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe
Do you use a dewcap? Per Patrick's post, one about two tube diameters long can go a long way to keeping your corrector plate clear. _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
I made a homemade dew cap for my 10" LX-200 from a thin blue exercise/camping mat based on some directions from Jim Seargeant (who now lives in New Mexico). I used contact cement and a smaller piece of the mat (on the outside) to glue the seam together. I flocked the inside of the dew cap earlier this year. It has worked very well for over five years now. I made a few cutouts for the dovetail bar I have on the top of the scope and a smaller cutout for a 2-D weight bar that I have on the bottom of the OTA. Jim's scope was a 12" LX-200 just like yours Joe. Clear skies, Dale.
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah- astronomy-bounces@mailman.xmission.com] On Behalf Of jcarman6@q.com Sent: Wednesday, November 09, 2011 1:30 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention
What about a sheet a plastic? You may be able to role that into a tube, considering the diameter of your scope. Of cours, that would have be a pretty long sheet of plastic.
----- Original Message ----- From: "Joe Bauman" <josephmbauman@yahoo.com> To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 12:47:57 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention
Mine would have to be two feet long, and I would need to make sure it didn't stick up over the guidescope or throw the telescope off balance. Once I tried with a homemade one, stiff construction paper, but I had so much trouble keeping it taped together that it wasn't worthwhile. But I had put it together in the dark while observing. I bet if I made one at home it would work better. Thanks, Joe
________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 11:53 AM Subject: Re: [Utah-astronomy] Dew/Frost prevention
On 11/9/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe
Do you use a dewcap? Per Patrick's post, one about two tube diameters long can go a long way to keeping your corrector plate clear.
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Thanks, Dale. Do you have an email address for Mr. Seargent? -- Best wishes, Joe ________________________________ From: Dale Hooper <Dale.Hooper@sdl.usu.edu> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 2:01 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention I made a homemade dew cap for my 10" LX-200 from a thin blue exercise/camping mat based on some directions from Jim Seargeant (who now lives in New Mexico). I used contact cement and a smaller piece of the mat (on the outside) to glue the seam together. I flocked the inside of the dew cap earlier this year. It has worked very well for over five years now. I made a few cutouts for the dovetail bar I have on the top of the scope and a smaller cutout for a 2-D weight bar that I have on the bottom of the OTA. Jim's scope was a 12" LX-200 just like yours Joe. Clear skies, Dale.
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah- astronomy-bounces@mailman.xmission.com] On Behalf Of jcarman6@q.com Sent: Wednesday, November 09, 2011 1:30 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention
What about a sheet a plastic? You may be able to role that into a tube, considering the diameter of your scope. Of cours, that would have be a pretty long sheet of plastic.
----- Original Message ----- From: "Joe Bauman" <josephmbauman@yahoo.com> To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 12:47:57 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention
Mine would have to be two feet long, and I would need to make sure it didn't stick up over the guidescope or throw the telescope off balance. Once I tried with a homemade one, stiff construction paper, but I had so much trouble keeping it taped together that it wasn't worthwhile. But I had put it together in the dark while observing. I bet if I made one at home it would work better. Thanks, Joe
________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 11:53 AM Subject: Re: [Utah-astronomy] Dew/Frost prevention
On 11/9/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe
Do you use a dewcap? Per Patrick's post, one about two tube diameters long can go a long way to keeping your corrector plate clear.
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Hi Joe, Yes, it's JimSarge at gmail.com (convert this to an actual address). This uses the same type of foam that Mat is talking about. It works very well. Clear skies, Dale.
-----Original Message----- From: utah-astronomy- bounces+dale.hooper=sdl.usu.edu@mailman.xmission.com [mailto:utah- astronomy-bounces+dale.hooper=sdl.usu.edu@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Wednesday, November 09, 2011 2:07 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention
Thanks, Dale. Do you have an email address for Mr. Seargent? -- Best wishes, Joe
________________________________ From: Dale Hooper <Dale.Hooper@sdl.usu.edu> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 2:01 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention
I made a homemade dew cap for my 10" LX-200 from a thin blue exercise/camping mat based on some directions from Jim Seargeant (who now lives in New Mexico). I used contact cement and a smaller piece of the mat (on the outside) to glue the seam together. I flocked the inside of the dew cap earlier this year. It has worked very well for over five years now.
I made a few cutouts for the dovetail bar I have on the top of the scope and a smaller cutout for a 2-D weight bar that I have on the bottom of the OTA.
Jim's scope was a 12" LX-200 just like yours Joe.
Clear skies, Dale.
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah- astronomy-bounces@mailman.xmission.com] On Behalf Of jcarman6@q.com Sent: Wednesday, November 09, 2011 1:30 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention
What about a sheet a plastic? You may be able to role that into a tube, considering the diameter of your scope. Of cours, that would have be a pretty long sheet of plastic.
----- Original Message ----- From: "Joe Bauman" <josephmbauman@yahoo.com> To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 12:47:57 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention
Mine would have to be two feet long, and I would need to make sure it didn't stick up over the guidescope or throw the telescope off balance. Once I tried with a homemade one, stiff construction paper, but I had so much trouble keeping it taped together that it wasn't worthwhile. But I had put it together in the dark while observing. I bet if I made one at home it would work better. Thanks, Joe
________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 11:53 AM Subject: Re: [Utah-astronomy] Dew/Frost prevention
On 11/9/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe
Do you use a dewcap? Per Patrick's post, one about two tube diameters long can go a long way to keeping your corrector plate clear.
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Thanks, Dale! ________________________________ From: Dale Hooper <Dale.Hooper@sdl.usu.edu> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 2:11 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention Hi Joe, Yes, it's JimSarge at gmail.com (convert this to an actual address). This uses the same type of foam that Mat is talking about. It works very well. Clear skies, Dale.
-----Original Message----- From: utah-astronomy- bounces+dale.hooper=sdl.usu.edu@mailman.xmission.com [mailto:utah- astronomy-bounces+dale.hooper=sdl.usu.edu@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Wednesday, November 09, 2011 2:07 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention
Thanks, Dale. Do you have an email address for Mr. Seargent? -- Best wishes, Joe
________________________________ From: Dale Hooper <Dale.Hooper@sdl.usu.edu> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 2:01 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention
I made a homemade dew cap for my 10" LX-200 from a thin blue exercise/camping mat based on some directions from Jim Seargeant (who now lives in New Mexico). I used contact cement and a smaller piece of the mat (on the outside) to glue the seam together. I flocked the inside of the dew cap earlier this year. It has worked very well for over five years now.
I made a few cutouts for the dovetail bar I have on the top of the scope and a smaller cutout for a 2-D weight bar that I have on the bottom of the OTA.
Jim's scope was a 12" LX-200 just like yours Joe.
Clear skies, Dale.
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah- astronomy-bounces@mailman.xmission.com] On Behalf Of jcarman6@q.com Sent: Wednesday, November 09, 2011 1:30 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention
What about a sheet a plastic? You may be able to role that into a tube, considering the diameter of your scope. Of cours, that would have be a pretty long sheet of plastic.
----- Original Message ----- From: "Joe Bauman" <josephmbauman@yahoo.com> To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 12:47:57 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention
Mine would have to be two feet long, and I would need to make sure it didn't stick up over the guidescope or throw the telescope off balance. Once I tried with a homemade one, stiff construction paper, but I had so much trouble keeping it taped together that it wasn't worthwhile. But I had put it together in the dark while observing. I bet if I made one at home it would work better. Thanks, Joe
________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 11:53 AM Subject: Re: [Utah-astronomy] Dew/Frost prevention
On 11/9/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe
Do you use a dewcap? Per Patrick's post, one about two tube diameters long can go a long way to keeping your corrector plate clear.
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Joe, don't forget my suggestion from a month or so ago of using a cheap, blue foam, backpacking sleeping pad as a dew cap. They're extremely light and will wrap around your tube easily. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Wednesday, November 09, 2011 2:48 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention Mine would have to be two feet long, and I would need to make sure it didn't stick up over the guidescope or throw the telescope off balance. Once I tried with a homemade one, stiff construction paper, but I had so much trouble keeping it taped together that it wasn't worthwhile. But I had put it together in the dark while observing. I bet if I made one at home it would work better. Thanks, Joe ________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 11:53 AM Subject: Re: [Utah-astronomy] Dew/Frost prevention On 11/9/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe
Do you use a dewcap? Per Patrick's post, one about two tube diameters long can go a long way to keeping your corrector plate clear. _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php ---------------------------------------------------------------------------- This message and any included attachments are from Siemens Medical Solutions and are intended only for the addressee(s). The information contained herein may include trade secrets or privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you received this message in error, or have reason to believe you are not authorized to receive it, please promptly delete this message and notify the sender by e-mail with a copy to Central.SecurityOffice@siemens.com Thank you
Hi Mat, But will it keep stiff, or will it droop or fold? Thanks, Joe ________________________________ From: "Hutchings, Mat (H USA)" <mat.hutchings@siemens.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 2:05 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention Joe, don't forget my suggestion from a month or so ago of using a cheap, blue foam, backpacking sleeping pad as a dew cap. They're extremely light and will wrap around your tube easily. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Wednesday, November 09, 2011 2:48 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention Mine would have to be two feet long, and I would need to make sure it didn't stick up over the guidescope or throw the telescope off balance. Once I tried with a homemade one, stiff construction paper, but I had so much trouble keeping it taped together that it wasn't worthwhile. But I had put it together in the dark while observing. I bet if I made one at home it would work better. Thanks, Joe ________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 11:53 AM Subject: Re: [Utah-astronomy] Dew/Frost prevention On 11/9/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe
Do you use a dewcap? Per Patrick's post, one about two tube diameters long can go a long way to keeping your corrector plate clear. _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php ---------------------------------------------------------------------------- This message and any included attachments are from Siemens Medical Solutions and are intended only for the addressee(s). The information contained herein may include trade secrets or privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you received this message in error, or have reason to believe you are not authorized to receive it, please promptly delete this message and notify the sender by e-mail with a copy to Central.SecurityOffice@siemens.com Thank you _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Hi Joe; It'll be stiff enough once it is rolled into the tubular shape you need. All you need to do is roll it so it fits your tube, then glue the seam. If you want to cover the inside with black paper, simply spray both the inside surface of the foam (before you roll it), and one side of the paper with some spray contact adhesive (3M Super 77 is good) let them both dry a little and stick them together. Then roll the tube and glue. If you want to do this on Saturday at the ATM session, you can save yourself from buying adhesives as I have all you'll need. Just bring a foam pad, black paper and your telescope OTA. Looks like at least one other poster to this board uses exactly what I'm talking about. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Wednesday, November 09, 2011 4:08 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention Hi Mat, But will it keep stiff, or will it droop or fold? Thanks, Joe ________________________________ From: "Hutchings, Mat (H USA)" <mat.hutchings@siemens.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 2:05 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention Joe, don't forget my suggestion from a month or so ago of using a cheap, blue foam, backpacking sleeping pad as a dew cap. They're extremely light and will wrap around your tube easily. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Wednesday, November 09, 2011 2:48 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention Mine would have to be two feet long, and I would need to make sure it didn't stick up over the guidescope or throw the telescope off balance. Once I tried with a homemade one, stiff construction paper, but I had so much trouble keeping it taped together that it wasn't worthwhile. But I had put it together in the dark while observing. I bet if I made one at home it would work better. Thanks, Joe ________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 11:53 AM Subject: Re: [Utah-astronomy] Dew/Frost prevention On 11/9/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe
Do you use a dewcap? Per Patrick's post, one about two tube diameters long can go a long way to keeping your corrector plate clear. _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php ---------------------------------------------------------------------------- This message and any included attachments are from Siemens Medical Solutions and are intended only for the addressee(s). The information contained herein may include trade secrets or privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you received this message in error, or have reason to believe you are not authorized to receive it, please promptly delete this message and notify the sender by e-mail with a copy to Central.SecurityOffice@siemens.com Thank you _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Thanks, Mat. I'll be working on it before the next new moon. But where do you get this stuff? -- Best wishes, Joe ________________________________ From: "Hutchings, Mat (H USA)" <mat.hutchings@siemens.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 2:21 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention Hi Joe; It'll be stiff enough once it is rolled into the tubular shape you need. All you need to do is roll it so it fits your tube, then glue the seam. If you want to cover the inside with black paper, simply spray both the inside surface of the foam (before you roll it), and one side of the paper with some spray contact adhesive (3M Super 77 is good) let them both dry a little and stick them together. Then roll the tube and glue. If you want to do this on Saturday at the ATM session, you can save yourself from buying adhesives as I have all you'll need. Just bring a foam pad, black paper and your telescope OTA. Looks like at least one other poster to this board uses exactly what I'm talking about. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Wednesday, November 09, 2011 4:08 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention Hi Mat, But will it keep stiff, or will it droop or fold? Thanks, Joe ________________________________ From: "Hutchings, Mat (H USA)" <mat.hutchings@siemens.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 2:05 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention Joe, don't forget my suggestion from a month or so ago of using a cheap, blue foam, backpacking sleeping pad as a dew cap. They're extremely light and will wrap around your tube easily. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Wednesday, November 09, 2011 2:48 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention Mine would have to be two feet long, and I would need to make sure it didn't stick up over the guidescope or throw the telescope off balance. Once I tried with a homemade one, stiff construction paper, but I had so much trouble keeping it taped together that it wasn't worthwhile. But I had put it together in the dark while observing. I bet if I made one at home it would work better. Thanks, Joe ________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 11:53 AM Subject: Re: [Utah-astronomy] Dew/Frost prevention On 11/9/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe
Do you use a dewcap? Per Patrick's post, one about two tube diameters long can go a long way to keeping your corrector plate clear. _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php ---------------------------------------------------------------------------- This message and any included attachments are from Siemens Medical Solutions and are intended only for the addressee(s). The information contained herein may include trade secrets or privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you received this message in error, or have reason to believe you are not authorized to receive it, please promptly delete this message and notify the sender by e-mail with a copy to Central.SecurityOffice@siemens.com Thank you _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Joe, I,ll make you one if you pay for materials and send me your tube OD. Kindergarten stuff. On Nov 9, 2011 5:09 PM, "Joe Bauman" <josephmbauman@yahoo.com> wrote:
Thanks, Mat. I'll be working on it before the next new moon. But where do you get this stuff? -- Best wishes, Joe
________________________________ From: "Hutchings, Mat (H USA)" <mat.hutchings@siemens.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 2:21 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention
Hi Joe;
It'll be stiff enough once it is rolled into the tubular shape you need. All you need to do is roll it so it fits your tube, then glue the seam. If you want to cover the inside with black paper, simply spray both the inside surface of the foam (before you roll it), and one side of the paper with some spray contact adhesive (3M Super 77 is good) let them both dry a little and stick them together. Then roll the tube and glue. If you want to do this on Saturday at the ATM session, you can save yourself from buying adhesives as I have all you'll need. Just bring a foam pad, black paper and your telescope OTA.
Looks like at least one other poster to this board uses exactly what I'm talking about.
Mat
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto: utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Wednesday, November 09, 2011 4:08 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention
Hi Mat, But will it keep stiff, or will it droop or fold? Thanks, Joe
________________________________ From: "Hutchings, Mat (H USA)" <mat.hutchings@siemens.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 2:05 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention
Joe, don't forget my suggestion from a month or so ago of using a cheap, blue foam, backpacking sleeping pad as a dew cap. They're extremely light and will wrap around your tube easily.
Mat
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto: utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Wednesday, November 09, 2011 2:48 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention
Mine would have to be two feet long, and I would need to make sure it didn't stick up over the guidescope or throw the telescope off balance. Once I tried with a homemade one, stiff construction paper, but I had so much trouble keeping it taped together that it wasn't worthwhile. But I had put it together in the dark while observing. I bet if I made one at home it would work better. Thanks, Joe
________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 11:53 AM Subject: Re: [Utah-astronomy] Dew/Frost prevention
On 11/9/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe
Do you use a dewcap? Per Patrick's post, one about two tube diameters long can go a long way to keeping your corrector plate clear.
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
---------------------------------------------------------------------------- This message and any included attachments are from Siemens Medical Solutions and are intended only for the addressee(s). The information contained herein may include trade secrets or privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you received this message in error, or have reason to believe you are not authorized to receive it, please promptly delete this message and notify the sender by e-mail with a copy to Central.SecurityOffice@siemens.com
Thank you
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Wow! I'd definitely would like that, Chuck. I'll measure it tomorrow. Many thanks, Joe ________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 6:19 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention Joe, I,ll make you one if you pay for materials and send me your tube OD. Kindergarten stuff. On Nov 9, 2011 5:09 PM, "Joe Bauman" <josephmbauman@yahoo.com> wrote:
Thanks, Mat. I'll be working on it before the next new moon. But where do you get this stuff? -- Best wishes, Joe
________________________________ From: "Hutchings, Mat (H USA)" <mat.hutchings@siemens.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 2:21 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention
Hi Joe;
It'll be stiff enough once it is rolled into the tubular shape you need. All you need to do is roll it so it fits your tube, then glue the seam. If you want to cover the inside with black paper, simply spray both the inside surface of the foam (before you roll it), and one side of the paper with some spray contact adhesive (3M Super 77 is good) let them both dry a little and stick them together. Then roll the tube and glue. If you want to do this on Saturday at the ATM session, you can save yourself from buying adhesives as I have all you'll need. Just bring a foam pad, black paper and your telescope OTA.
Looks like at least one other poster to this board uses exactly what I'm talking about.
Mat
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto: utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Wednesday, November 09, 2011 4:08 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention
Hi Mat, But will it keep stiff, or will it droop or fold? Thanks, Joe
________________________________ From: "Hutchings, Mat (H USA)" <mat.hutchings@siemens.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 2:05 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention
Joe, don't forget my suggestion from a month or so ago of using a cheap, blue foam, backpacking sleeping pad as a dew cap. They're extremely light and will wrap around your tube easily.
Mat
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto: utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Wednesday, November 09, 2011 2:48 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention
Mine would have to be two feet long, and I would need to make sure it didn't stick up over the guidescope or throw the telescope off balance. Once I tried with a homemade one, stiff construction paper, but I had so much trouble keeping it taped together that it wasn't worthwhile. But I had put it together in the dark while observing. I bet if I made one at home it would work better. Thanks, Joe
________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 11:53 AM Subject: Re: [Utah-astronomy] Dew/Frost prevention
On 11/9/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe
Do you use a dewcap? Per Patrick's post, one about two tube diameters long can go a long way to keeping your corrector plate clear.
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
---------------------------------------------------------------------------- This message and any included attachments are from Siemens Medical Solutions and are intended only for the addressee(s). The information contained herein may include trade secrets or privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you received this message in error, or have reason to believe you are not authorized to receive it, please promptly delete this message and notify the sender by e-mail with a copy to Central.SecurityOffice@siemens.com
Thank you
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Joe, you can get the foam pads at any outdoors place (REI, Kirkham's, etc, etc). Just be sure to get the thinnest one you can. My thinnest pad is 3/8", that's pretty thin for sleeping on (especially as I get older), but is good for a dew cap. Patrick had probably the best suggestion of using the tool drawer liner. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Wednesday, November 09, 2011 7:09 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention Thanks, Mat. I'll be working on it before the next new moon. But where do you get this stuff? -- Best wishes, Joe ________________________________ From: "Hutchings, Mat (H USA)" <mat.hutchings@siemens.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 2:21 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention Hi Joe; It'll be stiff enough once it is rolled into the tubular shape you need. All you need to do is roll it so it fits your tube, then glue the seam. If you want to cover the inside with black paper, simply spray both the inside surface of the foam (before you roll it), and one side of the paper with some spray contact adhesive (3M Super 77 is good) let them both dry a little and stick them together. Then roll the tube and glue. If you want to do this on Saturday at the ATM session, you can save yourself from buying adhesives as I have all you'll need. Just bring a foam pad, black paper and your telescope OTA. Looks like at least one other poster to this board uses exactly what I'm talking about. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Wednesday, November 09, 2011 4:08 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention Hi Mat, But will it keep stiff, or will it droop or fold? Thanks, Joe ________________________________ From: "Hutchings, Mat (H USA)" <mat.hutchings@siemens.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 2:05 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention Joe, don't forget my suggestion from a month or so ago of using a cheap, blue foam, backpacking sleeping pad as a dew cap. They're extremely light and will wrap around your tube easily. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Wednesday, November 09, 2011 2:48 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention Mine would have to be two feet long, and I would need to make sure it didn't stick up over the guidescope or throw the telescope off balance. Once I tried with a homemade one, stiff construction paper, but I had so much trouble keeping it taped together that it wasn't worthwhile. But I had put it together in the dark while observing. I bet if I made one at home it would work better. Thanks, Joe ________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 11:53 AM Subject: Re: [Utah-astronomy] Dew/Frost prevention On 11/9/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe
Do you use a dewcap? Per Patrick's post, one about two tube diameters long can go a long way to keeping your corrector plate clear. _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php ---------------------------------------------------------------------------- This message and any included attachments are from Siemens Medical Solutions and are intended only for the addressee(s). The information contained herein may include trade secrets or privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you received this message in error, or have reason to believe you are not authorized to receive it, please promptly delete this message and notify the sender by e-mail with a copy to Central.SecurityOffice@siemens.com Thank you _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Thanks, Mat, But Chuck has kindly offered to make one for me, if I just pay for the material -- he knows how -- and I'm overjoyed to accept his offer. Best wishes, Joe ________________________________ From: "Hutchings, Mat (H USA)" <mat.hutchings@siemens.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Thursday, November 10, 2011 8:43 AM Subject: Re: [Utah-astronomy] Dew/Frost prevention Joe, you can get the foam pads at any outdoors place (REI, Kirkham's, etc, etc). Just be sure to get the thinnest one you can. My thinnest pad is 3/8", that's pretty thin for sleeping on (especially as I get older), but is good for a dew cap. Patrick had probably the best suggestion of using the tool drawer liner. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Wednesday, November 09, 2011 7:09 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention Thanks, Mat. I'll be working on it before the next new moon. But where do you get this stuff? -- Best wishes, Joe ________________________________ From: "Hutchings, Mat (H USA)" <mat.hutchings@siemens.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 2:21 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention Hi Joe; It'll be stiff enough once it is rolled into the tubular shape you need. All you need to do is roll it so it fits your tube, then glue the seam. If you want to cover the inside with black paper, simply spray both the inside surface of the foam (before you roll it), and one side of the paper with some spray contact adhesive (3M Super 77 is good) let them both dry a little and stick them together. Then roll the tube and glue. If you want to do this on Saturday at the ATM session, you can save yourself from buying adhesives as I have all you'll need. Just bring a foam pad, black paper and your telescope OTA. Looks like at least one other poster to this board uses exactly what I'm talking about. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Wednesday, November 09, 2011 4:08 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention Hi Mat, But will it keep stiff, or will it droop or fold? Thanks, Joe ________________________________ From: "Hutchings, Mat (H USA)" <mat.hutchings@siemens.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 2:05 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention Joe, don't forget my suggestion from a month or so ago of using a cheap, blue foam, backpacking sleeping pad as a dew cap. They're extremely light and will wrap around your tube easily. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Wednesday, November 09, 2011 2:48 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Dew/Frost prevention Mine would have to be two feet long, and I would need to make sure it didn't stick up over the guidescope or throw the telescope off balance. Once I tried with a homemade one, stiff construction paper, but I had so much trouble keeping it taped together that it wasn't worthwhile. But I had put it together in the dark while observing. I bet if I made one at home it would work better. Thanks, Joe ________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 11:53 AM Subject: Re: [Utah-astronomy] Dew/Frost prevention On 11/9/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe
Do you use a dewcap? Per Patrick's post, one about two tube diameters long can go a long way to keeping your corrector plate clear. _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php ---------------------------------------------------------------------------- This message and any included attachments are from Siemens Medical Solutions and are intended only for the addressee(s). The information contained herein may include trade secrets or privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you received this message in error, or have reason to believe you are not authorized to receive it, please promptly delete this message and notify the sender by e-mail with a copy to Central.SecurityOffice@siemens.com Thank you _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
On 11/10/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
Thanks, Mat, But Chuck has kindly offered to make one for me, if I just pay for the material -- he knows how -- and I'm overjoyed to accept his offer.
My pleasure Joe. Hey, in addition to your tube OD, can you send me a photo of the front of the scope? I need to know how far back the dewcap can be seated before it runs into an obstacle such as guidescope rings and such. The drawer liner material is a good suggestion. I'm thinking of a thin polycarbonate core to prevent sagging if the foam itself is too thin.
Many thanks, Chuck. I'll try to get a photo tonight. Best wishes, Joe ________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Thursday, November 10, 2011 12:10 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention On 11/10/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
Thanks, Mat, But Chuck has kindly offered to make one for me, if I just pay for the material -- he knows how -- and I'm overjoyed to accept his offer.
My pleasure Joe. Hey, in addition to your tube OD, can you send me a photo of the front of the scope? I need to know how far back the dewcap can be seated before it runs into an obstacle such as guidescope rings and such. The drawer liner material is a good suggestion. I'm thinking of a thin polycarbonate core to prevent sagging if the foam itself is too thin. _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Just a thought but wouldn't it be better to take the scope to Chuck so he can fit the dew cap to the tube and y'all would not have to worry about something being mismeasured? Just sayin... patrick On 10 Nov 2011, at 17:30, Joe Bauman wrote:
Many thanks, Chuck. I'll try to get a photo tonight. Best wishes, Joe
________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Thursday, November 10, 2011 12:10 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention
On 11/10/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
Thanks, Mat, But Chuck has kindly offered to make one for me, if I just pay for the material -- he knows how -- and I'm overjoyed to accept his offer.
My pleasure Joe. Hey, in addition to your tube OD, can you send me a photo of the front of the scope? I need to know how far back the dewcap can be seated before it runs into an obstacle such as guidescope rings and such.
The drawer liner material is a good suggestion. I'm thinking of a thin polycarbonate core to prevent sagging if the foam itself is too thin.
Hi All, I still haven't taken the picture. Will do tomorrow, and I'm sure that plus my measurements of the telescope will be fine for Chuck. I don't want to haul the giant around if I don't have too! Thanks, Joe ________________________________ From: Patrick Wiggins <paw@wirelessbeehive.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Thursday, November 10, 2011 11:47 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention Just a thought but wouldn't it be better to take the scope to Chuck so he can fit the dew cap to the tube and y'all would not have to worry about something being mismeasured? Just sayin... patrick On 10 Nov 2011, at 17:30, Joe Bauman wrote:
Many thanks, Chuck. I'll try to get a photo tonight. Best wishes, Joe
________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Thursday, November 10, 2011 12:10 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention
On 11/10/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
Thanks, Mat, But Chuck has kindly offered to make one for me, if I just pay for the material -- he knows how -- and I'm overjoyed to accept his offer.
My pleasure Joe. Hey, in addition to your tube OD, can you send me a photo of the front of the scope? I need to know how far back the dewcap can be seated before it runs into an obstacle such as guidescope rings and such.
The drawer liner material is a good suggestion. I'm thinking of a thin polycarbonate core to prevent sagging if the foam itself is too thin.
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
I have old kendrick heaters, they weigh very little, what to do with all the wires is the biggest problem.
Mine would have to be two feet long, and I would need to make sure it
didn't stick up over the guidescope or throw the telescope off balance. Once I tried with a homemade one, stiff construction paper, but I had so much trouble keeping it taped together that it wasn't worthwhile. But I had put it together in the dark while observing. I bet if I made one at home it would work better. Thanks, Joe
________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 11:53 AM Subject: Re: [Utah-astronomy] Dew/Frost prevention
On 11/9/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
You know, Chuck, commercial is probably the best route for me -- when I can scrape together the dough. I'll check out OPT. Thanks, Joe
Do you use a dewcap? Per Patrick's post, one about two tube diameters long can go a long way to keeping your corrector plate clear.
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
Hi Joe, On 09 Nov 2011, at 12:47, Joe Bauman wrote:
Mine would have to be two feet long, and I would need to make sure it didn't stick up over the guidescope or throw the telescope off balance. Once I tried with a homemade one, stiff construction paper, but I had so much trouble keeping it taped together that it wasn't worthwhile. But I had put it together in the dark while observing. I bet if I made one at home it would work better. Thanks, Joe
So it sounds like you are not using a dew cap. Correct? IMHO you really do need one. Not only to keep dew at bay but also to shield from stray light. You've probably seen that you can buy dew caps with built in heaters made for your scope. I looked at a nice one for the C-14 but being cheap I decided to make one of my own and found that if I made it long enough I could do away with heaters (and their accompanying wires, controllers and power supplies). Others have already posted how they made theirs so I'll just add one other cheap and light weight material to make one out of is the dark colored sheet foam mechanics use to line the bottoms of the draws in tool boxes. It comes in rolls. IIRC, I got mine at Sears. I've also used the foam pads for use under sleeping bags but I think that's already been suggested here. patrick
Thanks, Patrick! ________________________________ From: Patrick Wiggins <paw@wirelessbeehive.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, November 9, 2011 5:04 PM Subject: Re: [Utah-astronomy] Dew/Frost prevention Hi Joe, On 09 Nov 2011, at 12:47, Joe Bauman wrote:
Mine would have to be two feet long, and I would need to make sure it didn't stick up over the guidescope or throw the telescope off balance. Once I tried with a homemade one, stiff construction paper, but I had so much trouble keeping it taped together that it wasn't worthwhile. But I had put it together in the dark while observing. I bet if I made one at home it would work better. Thanks, Joe
So it sounds like you are not using a dew cap. Correct? IMHO you really do need one. Not only to keep dew at bay but also to shield from stray light. You've probably seen that you can buy dew caps with built in heaters made for your scope. I looked at a nice one for the C-14 but being cheap I decided to make one of my own and found that if I made it long enough I could do away with heaters (and their accompanying wires, controllers and power supplies). Others have already posted how they made theirs so I'll just add one other cheap and light weight material to make one out of is the dark colored sheet foam mechanics use to line the bottoms of the draws in tool boxes. It comes in rolls. IIRC, I got mine at Sears. I've also used the foam pads for use under sleeping bags but I think that's already been suggested here. patrick _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php
participants (9)
-
Chuck Hards -
Dale Hooper -
erikhansen＠thebluezone.net -
Hutchings, Mat (H USA) -
Jay Eads -
jcarman6＠q.com -
Joe Bauman -
Patrick Wiggins -
Steve Fisher