[SB (Chris)]

Hi All,
I am noticing bright or dark pixels in my subs. These do not go away with stacking (see attached images).

The first two images show Hot pixels that have been detected, however there are bright and dark pixels that are not detected (either hot or cold detection). These pixels do not appear in the same location in every sub so they multiply out in the stacked image (see image 3 - a section of stacked Ha of the Helix Nebula showing bright pixels).

Any ideas what these pixels are or how to remove them.

Many thanks

Chris