Quote:
Originally Posted by Merlin66
I agree with Barry....
If the star is wobbling in the OAG FOV then I'd expect the stars to be wobbling in any image you take....
Could be seeing conditions, or some mechanical factor.
A good guide camera or a good OAG will give you results second to none.
I use PHD2 (and AstroArtV5) for guiding with an on-axis guider (reflective slit spectroscope) on a C11 at f10 using the Lodestar and can easily get ten minute subs on a 20 micron gap.......
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Please keep in mind, many people move up to an OAG, watch the graphs they are used to seeing in PHD which are flat, and complain that the OAG star is bouncing around. This is fine and valid if you are using phd2 and have it in arc seconds, and you have your program setup correctly. The guider he is using has 3 micron pixels, a binned lodestar has 17 micron pixels. A movement of 4 pixels in your QHY guider is still less than 2 arc seconds.
I myself would go with the OAG too, if you can find a guidestar with the guider, and I would definitely think about binning it!