Attached is a five minute unguided image of M81 through the CDK17/Aluma AC4040. I had it set to simple auto dark, camera cooled to -20 and used Stackpro. There are a number of horizontal lines and not sure what these might be. I also noticed that in the darks I shot, there are a number of vertical lines that look very much like dead pixels but there seems to be a lot of them. As this is a new camera wanted to make sure there wasn't something I had not set right. Everything in regards to gain and the like has not been changed.
These sensors are certainly "different" from the old CCD sensors. It takes a bit more work to get a clean result. Can you post a FITS frame?
It is a big file...and I 1/2 sized it but here. As I mentioned, none of the gain settings have been modified (purposely) on my part, have not monkeyed with them, don't know if this would make a difference or not.
Would that be a luminance frame? How long, 300" and which capture method? Of course this will be a big file. I do have darks and bias frames, raw out of the camera.
Ideally a light and a dark. Probably have to use dropbox or similar. When using StackPro with the AC4040 I recommend setting the minimum subexposure duration to 30 seconds. I find you don't get the best results if you set it very low.
Stop press... I was just told we have discovered a firmware bug in the Aluma AC4040 that impacts StackPro, which can cause banding. Stand by for a firmware update.
Oh, that's good. Detailed instructions on how to upgrade the firmware would be helpful when it is available. Thanks,
