I recently started using dark flats for calibration files instead of bias frames. I use a Nikon D5300 dlsr (
The last image that I processed (Eastern Veil) was the first time that I tried dark flats and I had no problems.
Today, I tried dark flats for the second time with the Western Veil Nebula (dark flats exposure for 1 second at iso 400 just like the flats). Same iso as my light frames.
This is the stacked image that I see in deepskystacker. Looks abnormally bright (usually the stacked image is very dark with just stars showing).
When I open the
Completely abnormal looking stacked image and stretch in
If I replace the dark flats in deepskystacker with regular bias frames (1/4000 sec at iso 400), my stacked image in
This is the initial stretch that I see in
It took me awhile to finally arrive at the fact that the dark flats were causing my issue since I successfully used them my last processing.
NOTE: The same light frames, master dark, and flats were used in both stacks. The only difference was the dark flats and bias.
NOTE:
This is what one of the dark flats look like.
Took lots of stacks to troubleshoot this today, but as it turns out, the data is poor anyway. Last night I measured the sky quality at 18.05 (
I have a ASI 533
Thank you for any help that you can give me.