Quote:
Originally Posted by TheAstroGuy
Marc,
Smooth as silk that shot is, nice work
Regards
Shane
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Quote:
Originally Posted by renormalised
Good shot, considering the problems  |
Thanks guys.
Quote:
Originally Posted by Dennis
Good work Marc – great to see that you are getting on top of the plethora of variables that can affect imaging at these focal lengths! Once you have controlled the controllable ones, you can then start on the unbounded, hidden ones! 
Cheers
Dennis |
Thanks Dennis. Yes it's been a long struggle, frustrating at times to say the least. The Hotech ACT helped a lot in understanding more about the scope and was instrumental in moving forward. I only realised yesterday how to differentiate collimation errors from corrector abberations. Because you ned to be collimated 100% to start seeing the other errors. One thing I learnt from all this is not to rely on ones eyes to assess a star test or a field flatness. Your brain will always do the work and compensate to make thing look right. The CCD on the other hand goes by the numbers and doesn't lie. It is a tedious and iterative process though.