Next time someone complains about collimating . . .
Imagine collimating this . . . http://www.hermanusastronomy.co.za/newsflash-articles/late-light-reveals-wha...
Who complains about collimating? It's like tying shoe-laces. ;o) On 7/25/10, Jay Eads <jayleads@gmail.com> wrote:
Imagine collimating this . . .
http://www.hermanusastronomy.co.za/newsflash-articles/late-light-reveals-wha...
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As a dyslexic, tying shoelaces the standard way is a trick I never mastered. Ever since I was a kid my solution was to make two loops (per shoe, one per lace) and tie them together with one or two granny knots. And collimating is a nightmare for me. -- Best wishes, Joe --- On Sun, 7/25/10, Chuck Hards <chuck.hards@gmail.com> wrote: From: Chuck Hards <chuck.hards@gmail.com> Subject: Re: [Utah-astronomy] Next time someone complains about collimating . . . To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Sunday, July 25, 2010, 10:18 PM Who complains about collimating? It's like tying shoe-laces. ;o) On 7/25/10, Jay Eads <jayleads@gmail.com> wrote:
Imagine collimating this . . .
http://www.hermanusastronomy.co.za/newsflash-articles/late-light-reveals-wha...
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Funny you say that Joe. I'm not dyslexic, but my grandfather (now I wonder if he was dyslexic) taught me to tie my shoes on a trip to Disneyland a year or two before he died. I was 5 years old, and he didn't teach me the 'standard' way--he taught me the way you describe. A few years later, I learned the 'standard' way, but I still tie them the way he taught me...it's only one of 3 or 4 memories I have of him, so it's kinda my way of keeping him in my mind. Back to collimating though--do the Bob's Knobs help out when collimating an SCT? I'm looking for ways to make collimating Dad's scope a bit easier. The first time we tried (at Bryce) it was a disaster. Second time worked perfectly though. Dan On Jul 25, 2010, at 10:26 PM, Joe Bauman wrote:
As a dyslexic, tying shoelaces the standard way is a trick I never mastered. Ever since I was a kid my solution was to make two loops (per shoe, one per lace) and tie them together with one or two granny knots. And collimating is a nightmare for me. -- Best wishes, Joe
--- On Sun, 7/25/10, Chuck Hards <chuck.hards@gmail.com> wrote:
From: Chuck Hards <chuck.hards@gmail.com> Subject: Re: [Utah-astronomy] Next time someone complains about collimating . . . To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Sunday, July 25, 2010, 10:18 PM
Who complains about collimating? It's like tying shoe-laces. ;o)
On 7/25/10, Jay Eads <jayleads@gmail.com> wrote:
Imagine collimating this . . .
http://www.hermanusastronomy.co.za/newsflash-articles/late-light-reveals-wha...
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-- Daniel Holmes, danielh@holmesonics.com "Laugh while you can, monkey boy!" -- Lord John Whorfin
Well, I seem to have a strange, particular type of dyslexia. When I was a kid I had trouble telling lower-case d's from b's, and left from right. Somehow I overcame almost all of it. The big exception is direction. Trying to find my way home from a new restaurant at night (or all too often, even one we've visited before), I'll invariably turn the wrong direction. I've been known to set up my scope pointing south instead of north. Walking home from work one night I got hopelessly lost and had to call Cory on the cell, to get straightened out. This sort of thing happens a lot. Just some tangled wiring coming from my internal compass. -- Joe --- On Mon, 7/26/10, Daniel Holmes <danielh@holmesonics.com> wrote: From: Daniel Holmes <danielh@holmesonics.com> Subject: Re: [Utah-astronomy] Next time someone complains about collimating . . . To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Monday, July 26, 2010, 7:10 AM Funny you say that Joe. I'm not dyslexic, but my grandfather (now I wonder if he was dyslexic) taught me to tie my shoes on a trip to Disneyland a year or two before he died. I was 5 years old, and he didn't teach me the 'standard' way--he taught me the way you describe. A few years later, I learned the 'standard' way, but I still tie them the way he taught me...it's only one of 3 or 4 memories I have of him, so it's kinda my way of keeping him in my mind. Back to collimating though--do the Bob's Knobs help out when collimating an SCT? I'm looking for ways to make collimating Dad's scope a bit easier. The first time we tried (at Bryce) it was a disaster. Second time worked perfectly though. Dan On Jul 25, 2010, at 10:26 PM, Joe Bauman wrote:
As a dyslexic, tying shoelaces the standard way is a trick I never mastered. Ever since I was a kid my solution was to make two loops (per shoe, one per lace) and tie them together with one or two granny knots. And collimating is a nightmare for me. -- Best wishes, Joe
--- On Sun, 7/25/10, Chuck Hards <chuck.hards@gmail.com> wrote:
From: Chuck Hards <chuck.hards@gmail.com> Subject: Re: [Utah-astronomy] Next time someone complains about collimating . . . To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Sunday, July 25, 2010, 10:18 PM
Who complains about collimating? It's like tying shoe-laces. ;o)
On 7/25/10, Jay Eads <jayleads@gmail.com> wrote:
Imagine collimating this . . .
http://www.hermanusastronomy.co.za/newsflash-articles/late-light-reveals-wha...
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-- Daniel Holmes, danielh@holmesonics.com "Laugh while you can, monkey boy!" -- Lord John Whorfin _______________________________________________ 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 Visit the Wiki: http://www.utahastronomy.com
Daniel, I bought Bob's Knobs for my Ultima 2000 (a souped-up C8), the best decision I made, besides buying it in the first place. The knobs allow you to collimate by yourself, a little difficult to do with a screwdriver. I highly recommend that you buy them - you won't regret it. One tip about collimating that I learned from Don Colton: Use the highest power eyepiece or eyepiece and Barlow combination that you have. The results will be much better than using a low power setup. Kim -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Daniel Holmes Sent: Monday, July 26, 2010 7:11 AM To: Utah Astronomy Subject: Re: [Utah-astronomy] Next time someone complains about collimating. . . Funny you say that Joe. I'm not dyslexic, but my grandfather (now I wonder if he was dyslexic) taught me to tie my shoes on a trip to Disneyland a year or two before he died. I was 5 years old, and he didn't teach me the 'standard' way--he taught me the way you describe. A few years later, I learned the 'standard' way, but I still tie them the way he taught me...it's only one of 3 or 4 memories I have of him, so it's kinda my way of keeping him in my mind. Back to collimating though--do the Bob's Knobs help out when collimating an SCT? I'm looking for ways to make collimating Dad's scope a bit easier. The first time we tried (at Bryce) it was a disaster. Second time worked perfectly though. Dan On Jul 25, 2010, at 10:26 PM, Joe Bauman wrote:
As a dyslexic, tying shoelaces the standard way is a trick I never mastered. Ever since I was a kid my solution was to make two loops (per shoe, one per lace) and tie them together with one or two granny knots. And collimating is a nightmare for me. -- Best wishes, Joe
--- On Sun, 7/25/10, Chuck Hards <chuck.hards@gmail.com> wrote:
From: Chuck Hards <chuck.hards@gmail.com> Subject: Re: [Utah-astronomy] Next time someone complains about collimating . . . To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Sunday, July 25, 2010, 10:18 PM
Who complains about collimating? It's like tying shoe-laces. ;o)
On 7/25/10, Jay Eads <jayleads@gmail.com> wrote:
Imagine collimating this . . .
http://www.hermanusastronomy.co.za/newsflash-articles/late-light-reveals-wha t-space-is-made-of/
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-- Daniel Holmes, danielh@holmesonics.com "Laugh while you can, monkey boy!" -- Lord John Whorfin _______________________________________________ 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 Visit the Wiki: http://www.utahastronomy.com
I can't even see a diffraction pattern at low power. Who would even try such a thing? On 7/26/10, Kim <kimharch@cut.net> wrote:
Use the highest power eyepiece or eyepiece and Barlow combination that you have. The results will be much better than using a low power setup.
I used to try to collimate at medium power, mainly due to inexperience and/or ignorance, and not having had much experience with SCT's. I just didn't realize the difference it makes. The other night I was observing near the Skyline Drive at about 9500 feet. I was looking at iota Cas and realized that the stars just weren't as crisp as they should be. Since I was using relatively high power, about 300x (as one must do for iota Cas) I just took a quick look at the out-of-focus image of a nearby bright star. The difference between what I could see at about 100x and what I saw at 300x was pretty dramatic. I hadn't realized that the scope was out of collimation. It wasn't much, not noticeable at lower powers, but enough that I could clearly see the off-center shadow of the secondary mirror that I hadn't seen at lower powers. With Bob's Knobs the collimation took all of about two minutes. The difference was striking. Iota Cas was the closely separated images of three pinpoints of light with perfectly concentric diffraction rings, as I remembered, and not the rather mushy appearance it had pre-collimation. Even as a veteran I have to be reminded to optimize the mechanics of my equipment to get the most out of my observing. Kim -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Chuck Hards Sent: Monday, July 26, 2010 1:41 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Next time someone complains about collimating.. . I can't even see a diffraction pattern at low power. Who would even try such a thing? On 7/26/10, Kim <kimharch@cut.net> wrote:
Use the highest power eyepiece or eyepiece and Barlow combination that you have. The results will be much better than using a low power setup.
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A good reason to have a refractor!
Who complains about collimating? It's like tying shoe-laces. ;o)
On 7/25/10, Jay Eads <jayleads@gmail.com> wrote:
Imagine collimating this . . .
http://www.hermanusastronomy.co.za/newsflash-articles/late-light-reveals-wha...
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participants (6)
-
Chuck Hards -
Daniel Holmes -
erikhansen＠thebluezone.net -
Jay Eads -
Joe Bauman -
Kim