ASI071MC-Pro- Dark Calibrations

gipht

My dark calibrations are showing a lot of blue and some red color, predominantly at the top, center, and bottom with the two middle sides in black. When used they leave a green band in the calibrated light stack.

Should dark calibrations show this amount of color. My DSLR dark calibrations do not have any significant color in them.

This is a stretched dark

Capture2.JPG

katherine.tsai

Darks does not need to be dabayerd. And this darks looks no problem.

gipht

Here is a stack using the Generic RGGB fit setting. This is stretched and highly saturated to show the gradients. Any ideas on what the problem might be?

Capture.JPG

gipht

This picture was a stack of 65 two minute subs with the STC dual band filter. The telescope was an f/4 reflector.

katherine.tsai

The pictures looks nice.

gipht

Katherine, you must not have taken a very good look at the picture. That is a terrible result using the Zwo camera. I am not certain that this is the fault of the camera, however.

katherine.tsai

gipht wrote:

Katherine, you must not have taken a very good look at the picture. That is a terrible result using the Zwo camera. I am not certain that this is the fault of the camera, however.

Did you use the same temperature, same exoposure time and offset as lights to take darks and calibrated the lights with darks?

katherine.tsai

Did you calibrate the lights with darks? The expsure settings of darks should be the same as lights, including the temp, exposure time and offset.