greetings (again)
Last week I took some lights consisting of about 40 x 3 minutes then finished off with two x 10 minutes on the same galaxy- the EXIF was about 24'c.
After calibrating with darks,flats.flat darks I have some thick red lines going top to bottom on the pics.
I din't dither these.
It was an unmodded DSLR.
? cause
Graham