I took a sequence of 13 light frames, which have been developped by Batchpreprocessing. After processing them I had a look at the log file. A warning showed up, that I don't understand. Here it is, time stamps deleted:
Writing output file: blablabla.xisf
Dark scaling factors:
k0 = 0.000
** Warning: No correlation between the master dark and target frames (channel 0).
Writing image: w=5496 h=3670 n=1 Gray Float32
Obviously, k0 = 0.0 is the reason. Other light frames lead to k0 = 1.6 to 1.8. But by the naked eye I don't see any differences between all my light frames.
Anybody who could explain me, what is wrong with this special image?
Thank you for responding
Heinrich
