2023-09-16: APP 2.0.0-beta23 has been released !
Improved performance again, CMD-A now works in macOS File Chooser, big improvement for bad column cosmetic correction, solved several bugs
We are very close now to releasing APP 2.0.0 stable with a complete printable manual...
Blank Master Flat after calibrating
I took Darks, Flats, DarkFlats and Bias frames yesterday, and loaded them up and ran calibration against them, following the workflow in the videos here. Darks, DarkFlat and Bias all resulted in Masters that looked as one would expect, a smoothed version of the subs.
However, the Master Flat was basically black, even with various stretching in APP or other viewers. I redid all the flat subs again tonight, very carefully (wizard in Nina). They all look as one would expect, dull grey with some vignetting at the corners. Calibrated in APP, and the result is all black again! Hovering over the image in the viewer, appears RGB values are all 01638.
Any ideas?? Thanks!
From the screenshot I can see you took the flats at 0.15 seconds, at least that is something you want to bring up to 1-2 seconds. How does a single flat look like and what are your gain and offset values?
I did find my problem, I accidentally created my DarkFlats with the same pictures... hence when calibrated they normalized to nothing!
Excellent, that is good to know! 🙂