Debbie, Try this number; 775-234-7331. Listen to the options, and if you can't get through the front desk, it'll ask you to leave a message. I was able to have Kelly return my call that way last Sunday. Hope to see you there! Tom Sevcik
From: utah-astronomy-request@mailman.xmission.com Subject: Utah-Astronomy Digest, Vol 101, Issue 77 To: utah-astronomy@mailman.xmission.com Date: Mon, 18 Jul 2011 12:24:05 -0600
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Today's Topics:
1. Re: Advice to Mod a Scope (Jay Eads) 2. Re: Astronomy Festival at Great Basin National Park - July 28-30 (Debbie) 3. Re: Astronomy Festival at Great Basin National Park - July 28-30 (Steve Fisher) 4. Re: Astronomy Festival at Great Basin National Park - July 28-30 (Debbie)
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Message: 1 Date: Sun, 17 Jul 2011 21:18:20 -0600 From: Jay Eads <jayleads@gmail.com> To: "Utah-Astronomy" <utah-astronomy@mailman.xmission.com> Subject: Re: [Utah-astronomy] Advice to Mod a Scope Message-ID: <9DF70FE1-2EF5-4D9A-8711-4A091C93DD56@gmail.com> Content-Type: text/plain; charset=us-ascii
Thanks Bob.
On 2011-07-16 15:48, Robert Taylor wrote:
Jay:
Couple of things. Take a look at your cell that holds the mirror, 1" mirrors have advantages (weight, cooling times, cost, etc.) but they need better support than a 2" mirror. I have a 1" thick 16" mirror on my Dob and use an 18 point floating system that works well, in general more points are better. Also the 1" mirror may affect your focus point now that your mirror is going to be sitting lower, make sure it is within range of your focuser, if not you may need to make some changes to compensate for the loss of length. Couple of ways you can do that if it's needed: raise the cell (best), shorten truss tubes (not without problems). Weight will be another issue, the 1" glass is going to be much lighter. If possible try to adjust the bearings on your mirror box by raising them to move the center of gravity lower. I would try to drop the mirror box as low as possible, this will reduce the need for counter weights. It's all about the balance point, set your scope horizontally on a 2x4 and find out where your balance point is, let that be your guide on how you adjust your scope.
Bob
-----Original Message----- From: utah-astronomy-bounces@??? [mailto:utah-astronomy-bounces@???] On Behalf Of Jay Eads Sent: Friday, July 15, 2011 11:55 PM To: Utah Astronomy Subject: [Utah-astronomy] Advice to Mod a Scope
A question to ask, well several and I would welcome opinions. I sent an email to Mat but I don't think he'll get it before Monday. If I were to put a 14 inch diameter mirror that is 1 inches thick or so, compared to the current 2 inch mirror that is currently in my 14 inch, I know I would need to adjust the counterweights to accommodate for the loss in weight to balance the scope, and thus my first question. On the XX14i that i own, it came with 3 counterweights in the back behind the mirror that screw on. If I replaced these with a heavier counterweight that was slightly larger than what is there, would the additional counterweight impact cooling time? I would assume not since the Carl Zambuto mirror would be lighter and already take a shorter cool down time. Is that correct? I also know I could keep the current counterweight system and add a bag full of lead shot and attach it to the lower tube for increase weight. That option seems to work also.
Next question. Since the weight of the scope would change would this require a build of the lower base to correct for the new center of gravity the scope would have or would the current system still work?
Just thinking aloud here and testing a few ideas among other tests so just seeing what a lighter mirror's impact would be at the 14 inch level. I know when I tested the 10 inch Zambuto mirror, the new mirror worked just fine in the stock tube and mirror cell. I had no balance issues. Anyway, if you have a thought let me know what it is please as I study for finals this weekend for Monday.
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Message: 2 Date: Mon, 18 Jul 2011 10:33:30 -0600 From: Debbie <astrodeb@beyondbb.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Subject: Re: [Utah-astronomy] Astronomy Festival at Great Basin National Park - July 28-30 Message-ID: <CAChSONYc6Kk4rX9xHNSFHK5u9VxLvWxPXsgnEAjXwgFoEGQroQ@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1
Is there a way to get a hold of Kelly Carroll? I've e-mailed him and I'm still waiting for a response. Does he have a phone number? If I don't hear from him then I'll have to make other plans.
Debbie
On Sat, Jul 9, 2011 at 3:50 PM, <Kelly_Carroll@nps.gov> wrote:
Having Bryce withdrawal?
Great Basin National Park will be having its 2nd Annual Astronomy Festival July 28-30.
Like last year we will be having our astronomer's camp (free tent camping - astronomer's camp has a limited number of space, opens Thursday morning until Sunday morning and it's tent only), free astronomer's dinner, and a ranger talent show - as well as 23 other events.
You can see our schedule of events at: http://www.nps.gov/grba/planyourvisit/2011-astronomy-festival.htm
Dr. Tyler Nordgren, astronomer and author of "Stars Above, Earth Below: A Guide to Astronomy in the National Parks" will be this year's keynote speaker.
Please email me if you have any questions.
We hope to see you here!
Best and clear skies,
Kelly
Kelly Carroll Great Basin National Park http://www.nps.gov/grba/ Experience your America
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Message: 3 Date: Mon, 18 Jul 2011 11:46:59 -0600 From: Steve Fisher <iotacass1@hotmail.com> To: <utah-astronomy@mailman.xmission.com> Subject: Re: [Utah-astronomy] Astronomy Festival at Great Basin National Park - July 28-30 Message-ID: <SNT135-w358303CEE6B8B81218B306EF4A0@phx.gbl> Content-Type: text/plain; charset="iso-8859-1"
Debbie: Just hang tight. I'm not sure what Kelly's days off or day off is but he will be getting back to you. Are you trying to reserve a spot in the astronomers camp? Let me know if I can help or pass anything along to Kelly when I hear from him. You are using the correct email address right? s noted below.Steve
Date: Mon, 18 Jul 2011 10:33:30 -0600 From: astrodeb@beyondbb.com To: utah-astronomy@mailman.xmission.com Subject: Re: [Utah-astronomy] Astronomy Festival at Great Basin National Park - July 28-30
Is there a way to get a hold of Kelly Carroll? I've e-mailed him and I'm still waiting for a response. Does he have a phone number? If I don't hear from him then I'll have to make other plans.
Debbie
On Sat, Jul 9, 2011 at 3:50 PM, <Kelly_Carroll@nps.gov> wrote:
Having Bryce withdrawal?
Great Basin National Park will be having its 2nd Annual Astronomy Festival July 28-30.
Like last year we will be having our astronomer's camp (free tent camping - astronomer's camp has a limited number of space, opens Thursday morning until Sunday morning and it's tent only), free astronomer's dinner, and a ranger talent show - as well as 23 other events.
You can see our schedule of events at: http://www.nps.gov/grba/planyourvisit/2011-astronomy-festival.htm
Dr. Tyler Nordgren, astronomer and author of "Stars Above, Earth Below: A Guide to Astronomy in the National Parks" will be this year's keynote speaker.
Please email me if you have any questions.
We hope to see you here!
Best and clear skies,
Kelly
Kelly Carroll Great Basin National Park http://www.nps.gov/grba/ Experience your America
_______________________________________________ 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
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Message: 4 Date: Mon, 18 Jul 2011 12:23:43 -0600 From: Debbie <astrodeb@beyondbb.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Subject: Re: [Utah-astronomy] Astronomy Festival at Great Basin National Park - July 28-30 Message-ID: <CAChSONY_N8c6z+s_Rbni9McEds82w37SLXOjYnX_xFWznDOCVA@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1
yes, I'm trying to reserve a spot in the astronomer's camp. I'm going to call a buddy of mine to see if he has his phone number.
Debbie
On Mon, Jul 18, 2011 at 11:46 AM, Steve Fisher <iotacass1@hotmail.com>wrote:
Debbie: Just hang tight. I'm not sure what Kelly's days off or day off is but he will be getting back to you. Are you trying to reserve a spot in the astronomers camp? Let me know if I can help or pass anything along to Kelly when I hear from him. You are using the correct email address right? s noted below.Steve
Date: Mon, 18 Jul 2011 10:33:30 -0600 From: astrodeb@beyondbb.com To: utah-astronomy@mailman.xmission.com Subject: Re: [Utah-astronomy] Astronomy Festival at Great Basin National Park - July 28-30
Is there a way to get a hold of Kelly Carroll? I've e-mailed him and I'm still waiting for a response. Does he have a phone number? If I don't hear from him then I'll have to make other plans.
Debbie
On Sat, Jul 9, 2011 at 3:50 PM, <Kelly_Carroll@nps.gov> wrote:
Having Bryce withdrawal?
Great Basin National Park will be having its 2nd Annual Astronomy
Festival
July 28-30.
Like last year we will be having our astronomer's camp (free tent camping - astronomer's camp has a limited number of space, opens Thursday morning until Sunday morning and it's tent only), free astronomer's dinner, and a ranger talent show - as well as 23 other events.
You can see our schedule of events at: http://www.nps.gov/grba/planyourvisit/2011-astronomy-festival.htm
Dr. Tyler Nordgren, astronomer and author of "Stars Above, Earth Below: A Guide to Astronomy in the National Parks" will be this year's keynote speaker.
Please email me if you have any questions.
We hope to see you here!
Best and clear skies,
Kelly
Kelly Carroll Great Basin National Park http://www.nps.gov/grba/ Experience your America
_______________________________________________ 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
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End of Utah-Astronomy Digest, Vol 101, Issue 77 ***********************************************