Originally posted by Midnight
Hmm I didn't see your post before writing my earlier response. :embrass: Anyway, yes, as I wrote above, it'll always be the same few pixels that'll exhibit hot pixel behavior first, though if your camera heats up sufficiently, more and more other pixels will also start to behave similarly. It's a well-known problem with CCD sensors that astronomers have had to deal with for many, many years.