Amp Glow, CCD Senor, Long Exposure

[Farzad_k]

Hi,

For NB imaging I use a 300 second exposure and I get amp glow (ASI 1600 MC). I am capturing the amp glow in the dark frames but they don't get eliminated when I integrate them. I have tried with and without optimizing the darks during calibration and it has not made any difference.

I don't have any flats on this project and I have a superbias file that I am using during calibration.
Should I be calibrating the darks when calibrating lights?

Thanks


Farzad

[wimvb]

The workflow that I use consists of Lights, Darks that match the lights exactly (time, temperature, gain, offset), Flats and Dark Flats (that match the flats exactly). I don't use bias frames, since the bias is already in the other frames. With cmos that has amp glow, you can't use optimised or scaled darks, because the glow is non linear.
I have an ASI174MM-Cool, that has considerably more amp glow than the ASI1600.

Hope this helps.

[Farzad_k]

Thanks. I think the issue was the optimization of the master dark during calibration.

Farzad