Excellent guide there Mike, I tried photographing with my dob for the first time at prime focus, it really is a different world to afocal photography, not being able to look through the EP takes a bit of getting used to. I was using a very low quality quickcam there was noise lines all over the screen and I think the chips cover was scratched, I had lines over it. I was amazed at the magnification you get also, I have an 8" f7 scope and jupiter and saturn came out quite large. I also shot alpha centauri with the cam stars were really easy to seperate with quite alot of light between it.
I can't wait to get a toucam pro to get a clearer image.
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