Date
1 - 12 of 12
Going Unguided With a Long FL Scope?
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Tony Benjamin <tonybenjamin@...>
Hi,
I've been putting together my imaging train for my C11 and have hit a snag. The QHYOAG will be hitting the back of the LiteCrawler using the backfocus of the 146mm. I can't see anyway around this except for:
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Steven
Hey Tony,
If you want to go unguided, try ATrack, get in touch with Craig Young on this forum for details. It works a treat! Doesn't use a guidescope or guider, easy as pie and VERY accurate!
Steve
From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Tony Benjamin <tonybenjamin@...>
Sent: Friday, 12 June 2020 12:18 AM To: main@ap-gto.groups.io <main@ap-gto.groups.io> Subject: [ap-gto] Going Unguided With a Long FL Scope? Hi,
I've been putting together my imaging train for my C11 and have hit a snag. The QHYOAG will be hitting the back of the LiteCrawler using the backfocus of the 146mm. I can't see anyway around this except for:
 
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Tony Benjamin <tonybenjamin@...>
Hi,
Can’t find anything online about it. Do you have a link?
Tony
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Steven Steven
Sent: June 11, 2020 10:11 PM To: main@ap-gto.groups.io Subject: Re: [ap-gto] Going Unguided With a Long FL Scope?
Hey Tony,
If you want to go unguided, try ATrack, get in touch with Craig Young on this forum for details. It works a treat! Doesn't use a guidescope or guider, easy as pie and VERY accurate!
Steve
From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Tony Benjamin <tonybenjamin@...>
Hi,
So far, going unguided seems to be the most reasonable solution. Question is...at 2800mm and with AE's...can I expect to go 10 min or longer unguided with AE's and a good pointing model?? |
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Roland Christen
can I expect to go 10 min or longer unguided with AE's and a good pointing model?? As long as your mirror doesn't flop, I believe 10 minutes will work ok. If you have any random flexure in the optical train, it may not work.
Rolando
-----Original Message-----
From: Tony Benjamin <tonybenjamin@...> To: main@ap-gto.groups.io Sent: Thu, Jun 11, 2020 11:18 pm Subject: [ap-gto] Going Unguided With a Long FL Scope? Hi,
I've been putting together my imaging train for my C11 and have hit a snag. The QHYOAG will be hitting the back of the LiteCrawler using the backfocus of the 146mm. I can't see anyway around this except for:
 
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Steven
HI Tony,
Get Craig on:
craig.young.m8@...
and send me a private email and I'll send you the User Guide, or Craig would likely gladly send it. A very helpful guy.
KR
Steve
From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Tony Benjamin <tonybenjamin@...>
Sent: Friday, 12 June 2020 1:19 AM To: main@ap-gto.groups.io <main@ap-gto.groups.io> Subject: Re: [ap-gto] Going Unguided With a Long FL Scope? Hi,
Can’t find anything online about it. Do you have a link?
Tony
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io]
On Behalf Of Steven Steven
Hey Tony,
If you want to go unguided, try ATrack, get in touch with Craig Young on this forum for details. It works a treat! Doesn't use a guidescope or guider, easy as pie and VERY accurate!
Steve
From:
main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Tony Benjamin <tonybenjamin@...>
Hi,
So far, going unguided seems to be the most reasonable solution. Question is...at 2800mm and with AE's...can I expect to go 10 min or longer unguided with AE's and a good pointing model??
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.can I expect to go 10 min or longer unguided with AE's and a good pointing model?? i thought AP mount + AE + unguided + good pointing model = APCC On Thu, Jun 11, 2020 at 10:11 PM Steven Steven <steven447@...> wrote:
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On 6/12/2020 12:18 AM, Tony Benjamin wrote:
* a guidescope (flexure issue)I recommend that you seriously consider a separate guide scope, and do everything you can to minimize flexure. I use a 300mm f/5 guide scope with ST-402 camera on a dovetail plate adjacent to my 30mm f/7 OTA. Initially I experienced some flexure, but got it under control. This link: <http://astronomy.mdodd.com/flexure.html#FlexureTable> describes what I did. And this image: <http://astronomy.mdodd.com/flexure.html#GoodNews> is a 30-minute guided image that exhibits no flexure. I'm very pleased that my efforts paid off. * a new camera with minimal backfocus (the ML16200 I'm using eats upWill your C11 fully illuminate the full-frame sensor in the ASI6200? I definitely would confirm that before investing in a new camera. -- Mike Mike Dodd Louisa County, Virginia USA http://astronomy.mdodd.com |
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Tony
I have been able to un-guided at least up to 15m with the following. I have not gone beyond that...do not expect to need to. A-P 1100 / CP4 (non-AE, no HC) APCC Pro / SGP / APPM Pointing and Tracking models (150 points) 14.5" AGOptical Corrected Dall-Kirkham...f.l. = 2500 Canon 6D full frame (Image scale = 0.55"/pxl) Median Eccentricity (using PixInsight) across one image was 0.4552 - guided and 0.4921 - unguided Median FWHM = 5.1 - guided and 7.4 - unguided It took effort to move up the learning curve on the software. Getting a good PE curve was also important. Bryan |
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On 6/12/20 9:26 AM, Mike Dodd wrote:
I use a 300mm f/5 guide scope with ST-402 camera on a dovetail plate adjacent to my 30mm f/7 OTAI'm impressed! Your guide scope is ten times the aperture of your imaging scope! I'm sure you meant something different. :) Mojo |
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On 6/12/2020 10:03 PM, Mojo Jones wrote:
On 6/12/20 9:26 AM, Mike Dodd wrote:Awk! I can't type any more, and apparently I can't proofread either. The diminished typing ability is due to a 2007 stroke, so I usually proofread things three times to compensate. Missed big-time today!I use a 300mm f/5 guide scope with ST-402 camera on a dovetail plateI'm impressed! Your guide scope is ten times the aperture of your My guide scope is 60mm aperture @ f/5, and the imaging scope is 130mm @ f/7. Thanks for the heads-up. -- Mike Mike Dodd Louisa County, Virginia USA http://astronomy.mdodd.com |
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Tony Benjamin <tonybenjamin@...>
Hehe,
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Yeah...I was wondering about a 130 mm guide scope :) Sorry about the stroke - good to see your still at it! In the end I went and ordered an Optec TCF-Leo which should allow me to use an OAG with the C11 Edge - if I want too. Tony -----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Mike Dodd Sent: June 12, 2020 7:34 PM To: main@ap-gto.groups.io Subject: Re: [ap-gto] Going Unguided With a Long FL Scope? On 6/12/2020 10:03 PM, Mojo Jones wrote: On 6/12/20 9:26 AM, Mike Dodd wrote:Awk! I can't type any more, and apparently I can't proofread either. The diminished typing ability is due to a 2007 stroke, so I usually proofread things three times to compensate. Missed big-time today!I use a 300mm f/5 guide scope with ST-402 camera on a dovetail plateI'm impressed! Your guide scope is ten times the aperture of your My guide scope is 60mm aperture @ f/5, and the imaging scope is 130mm @ f/7. Thanks for the heads-up. -- Mike Mike Dodd Louisa County, Virginia USA http://astronomy.mdodd.com |
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You've accomplished a remarkable recovery. :) Sorry about the stroke - good to see your still at it!The interesting thing is, the scope arrived while I was in the rehab hospital, so one of the first things I did after coming home was to install it on the AP1200 with the help of my wife and daughter. It was a bit scary mounting a 130mm APO with only one good arm and hand! I've recovered about 95% of my left-side functionality. Thanks for the good wishes, fellas. --- Mike |
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