It seems that my Zwo533 has created some weired spots during capturing. Initially the problem appeared just after the first shot of 180Sec @100 gain. I have decided to replace the USB cable and for the whole night imaging was smooth and problem dissapeared. The next day problem continued again. First shot was ok and then the problem appeared again.
I have tried even to connect camera directly on laptop but same bahavior. Any ideas what is this problem?
https://1drv.ms/u/s!AkngeDidmR72h_QWOZXN7N-V1YeBsw?e=61rvEW
I have provided a sample shot with a link to my onedrive.
When zooming in TIF file you will notice some square dots.
Thank you
