|
(Quote)
Cheers mate. I did 2 & 3 to the best of my abilities with the tools I had available to me. Not so sure on #1.
When you say the second pic looks like the spacing of the coma corrector is good, did you mean the first pic? The second pic has no coma corrector in place.
As for field rotation... this was taken on a near new, pier mounted AP Mach 1, polar aligned to within a couple of minutes.... periodic correction was enabled and these are both 15 second unguided exposures -- that's not field rotation caused by PA.[/QUOTE]
(End Quote)
Yes sorry the first pic Lee....the right middle side looks well corrected so that would lead me to think the spacing is good. I should add to that you should see the coma well corrected right round the image when you aliminate the tilt I would say.
So,ok then your PA is good and this is a result of the tilt.... just goes to show how things can look confusing when indeed you can get the same result from field rotation(in ref to the bottom right of the corrected image)
Like I mentioned Lee,first off you need to get your focuser centered to the secondary...
|