On my second night out my 1600mc seems to have developed a bad row. It worked fine the first night, and the second night my first two hours of exposures looked great. The third hour of pictures show a thin straight white artifact however. The same line in the same place appeared in the darks. I've rerun darks again, and the defect is still there.
attached is the full frame dark as well as a zoomed in shot of the defect.
I'm guessing this is a problem with the chip?
Thanks