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chitown
super member
Reged: 01/26/09
Loc: Plainfield, IL
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Auto guiding with a C6
#5045035 - 01/29/12 09:55 PM
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Guys, had a few frustrated nights and not sure if i am doing everything correctly. Here is what I am doing:
SSAG installed on a C6 with a focal reducer
PHD for guiding
I just can't seem to find a star in the PHD window. I tried to focus many times.
The focal reducer is installed on the SSAG and fully inserted into the C6.
What could be wrong?
I am using default PHD settings. It can find scope and camera successfully.
Help please!
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Mirzam
Post Laureate
Reged: 04/01/08
Loc: Lovettsville, VA
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Re: Auto guiding with a C6
[Re: chitown]
#5045464 - 01/30/12 07:38 AM
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If you have focused by eye the point of focus for the SSAG will be in from this point by about 20mm (if memory serves). I would set up on Polaris, which is bright enough to be visible even when it is slightly out of focus. It does not take much defocus to make a star invisible.
Also there is a setting (gain?) on the main screen of PhD that darkens the sky background somewhat. Are you looping exposures? No exposure, no star.
JimC
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skywolf856
sage
Reged: 01/25/08
Loc: SE Michigan
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Re: Auto guiding with a C6
[Re: Mirzam]
#5048728 - 01/31/12 08:26 PM
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You should do a test in daylight focusing on some distant object to verify focus.
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avarakin
Carpal Tunnel
Reged: 07/13/09
Loc: Parsippany NJ, USA
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Re: Auto guiding with a C6
[Re: skywolf856]
#5050794 - 02/01/12 11:05 PM
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I am afraid that C6 would be a huge pain for guiding. A lot of folks, including myself, guide with converted 50mm finders and it is more than enough for scopes less than 1000mm FL. I used to have a 70mm F5 scope for guiding and it was already a pain. Problem is exactly as you describe - very hard to find guide stars. With 50mm finder I have about 1* FOV which guaranties that I always have at least one good guiding star in the FOV.
Alex
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