Quote:
Originally Posted by alpal
Hi Steve,
Is this normal for QHY cameras?
I want to buy one but such a line would have me asking for warranty.
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I should say, it is not necessarily a defect....I haven't investigated it
to any extent.
All I know is that after a typical debayer and very extreme stretching of
a stack with anywhere from 50-100 images, there is this line.
It could be many things....
I don't use darks most times...you can see this in the form of blue dark holes/streaks dotted thru my recent images.
Darks will remove most of this type of 'in camera noise' if that is what it is.
I never use flats, although it doesn't seem like a thing a flat would remove.
My post-capture processing is usually a rough hack. I tend to over-stretch, which would emphasise this type of artifact.
FWIW.