Here's one from DSC, with failures of hardware and software I'd assumed I only had 2 subs so didn't bother with darks, flats or bias frames.
Turns out I had 8 good subs - this is with wrong flats, 4 degree warmer darks and bias - basically, a cock up.
Leo Triplet done wrong...........
(https://lh3.googleusercontent.com/_VTfcx7bG__M/Tc61XN0wofI/AAAAAAAABWE/nnUKo2l0lLg/LeoT-8x300-800-060511-s.jpg)
Can't believe the result, I even killed the bunnies :o
Shame you did not make the most of it, Mick, looks good
Mick,
The thing is you know where you are going wrong, I can't even get that far yet. :!
I am waiting to get something just like that, and I'll be well chuffed. ;)
Tony G