Hot Pixels

[Fay]

I did the Horsehead, last night, with Atik 314L.

There were so many hot pixels, I have never noticed this before. Do hot pixels vary night to night, or are they realtively the same with each camera each time?

Thanks

[Mike]

Fay they should stay pretty constant all the time. Are you sure they are hot pixels and you weren't hit by a shower of gamma rays?

[Ian]

if the ccd gets hotter, you will see a rise in hot pixels. Maybe the ccd cooling is malfunctioning?

[JohnP]

Like Ian said it's either cooling not working as well or perhaps it was a very warm night (but I don't think so last night...)

Can you do a dark & compare with similiar ones from a previous session...

John