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Thanks for the information Nik & luca. I managed to get out last night and take some shots, but really having trouble with the processing. I'm somewhat at a loss at this point, these issues have been plaguing me since getting the camera. I know I'm close, I can see the data there but there's something I haven't quite got right yet. If anyone can provide insight or suggestions that would be great.
Camera settings -
Gain 10
Offset 125
All images taken at -15C
Integration - (have uploaded an image of the masters... are these the issue?)
Using a Master Dark (40 Subs for the Master)
Using a Super Bias (60 Subs for the Master)
Using Master Flats (30 Subs for the Master)
First image I've attached is integration of 48x2 min subs with flats at 7k ADU (using APT's CCD Flat Aid tool) and the result after doing a simple ABE. Second image I've attached is integration of 48x2 min subs with flats at 25k ADU again with a result after doing a simple ABE.
There are a number of issues I can see, but can't fully diagnose -
1. There's image tilt evident by the halo around Alnitak, I've tried fixing this but everything is screwed/clasped down as tight as it will go...
2. Vignetting is evident, especially in the 25k ADU flat image. It almost seems like the flat frame has 'added' to the issue rather than fixing it...
3. Doing a simple ABE (as seen on the right of each image) leaves a horrendous mess, I have absolutely no clue as to why this happens.
Could issues 2 & 3 be caused by improper gain/offset settings in the camera? Any other ideas/suggestions?
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