Removing Green Color Cast

@jhullin Hi Jeff,

You probably can leave the settings of tab 0 to their defaults. APP is very well capable of detecting the Bayer pattern itself.

Having said that, can you post an image showing the issue? Just convert the integration result to a JPEG file and post that here.

And some questions for you. What software do you use to shoot the lights and calibration files? What gain, offset, temperature and exposure time? Do you use a filter (like L-eXtreme) or is this "pure" RGB?

Thanks, Wouter

Hi Wouter...I'm using an ASI Air Pro to shoot the lights and calibration files. The lights are 3 minutes in duration at gain 100 and -10 degrees. They are pure RGB. 

Thanks,

Jeff

@jhullin Thanks for the info and the image. Is this taken without any filter, in other words pure RGB? It could be light pollution or perhaps an issue with your calibration files. Do you see the green edge as well when you integrate the lights without any calibration files at all?

Hi Wouter,

Here is the stacked file...no calibration frames. This is straight RGB, I did not use a filter of any kind. This is much better...I shoot new flats for each session...bad bias or darks? 

Thanks,

Jeff

@jhullin Well, what happens if you stack with the bias and darks and not the flats?

Hi,

I had some time to do more testing, it appears the issue was with the bias frames. I've created new ones and the issue seems to be resolved. Thanks for your help.

Jeff