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Thanks for the help.I have not been able to see the airy disk.I bought an artificial star to help, but even with it at the back of my yard (250feet away) I have to really move the primary mirror a long way to focus. I thought I had got it pretty well collimated, but when I looked at an actual star the collimation was way off (I think I did take a pic-If I can fijnd it I will post it). I do have pretty crappy seeing most of the time.I would say the best I get is about 6/10 on the Pickering scale.I go through vdub frame by frame to remove the blurred images (usually remove about 20% of the red and green channel and about 50-60% of the blue channel). I have an atmospheric dispersion corrector-would that help? If it ever stops raining here (upstate New York) I will take some pics of an in focus and out of focus star!
Sorry for all the questions-Dont have a local astronomy club to bug
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