NGC 6888 - The Crescent Nebula

Nice image Nigel, looks like you've got your star elongation sorted. What was the issue?   Also wondered whether using your scope at native f7 might speed up image capture/ reduce noise.

Dave

On 30/09/2018 at 09:55, Laurin Dave said:

Nice image Nigel, looks like you've got your star elongation sorted. What was the issue?   Also wondered whether using your scope at native f7 might speed up image capture/ reduce noise.

Dave

 

Hi Dave, Good grief, I never spotted your comment here - over 4 years ago😳 sorry about that... just discovered it after updating my gallery this morning. Thanks - I never found the definitive issue: I suspect it just came down to polar alignment and the sensitivity to that at higher declinations. I've just re-mounted my Tak after a long period of using the 14", and I'm going to be trying to stick to f/7 and see how things turn out - the capture time and noise issue should be significantly better as you say, and for this site there should be no issues with under sampling. If the clouds clear I may post something in that configuration...

Thanks

Nigel