[Screwdriverone (Chris)]

Originally Posted by Poita

That vignetting is severe, which scope do you have? I can post you up some spacers if you need them.

Uhhh yeah, it is, its the F5 200mm reflector. I find the UV/IR nosepiece is too small for the 2" focuser to grab it, so its in place but is inserted right down flush to the camera body so the focuser grabs the 2" flange flush with the camera. Maybe I need to remove the UV/IR nosepiece and just use the camera's short 10mm barrel.

When I put the coma corrector on, the spacing is wrong, so the coma is WORSE than without it.

Anything you can send me to build up spacing would be good, I realised all I have is 1.25" bits which dont work. DOH!

Originally Posted by Poita

Just for reference, this is the 'raw' image of M31
http://www.dl-digital.com/images/Ast...s/M31-flat.jpg
and these are the finished images processed different ways:
http://www.dl-digital.com/astrophoto/M31_New.htm

He does detail his processing methods on his other pages.

Thanks for these, I will take a closer look at the sites and see if I can follow the bouncing ball.

Cheers

Chris