Quote:
Originally Posted by traveller
I selected Sigma-Kappa clipping for the light and dark frames instead of Average. I will have another go at it using Average and see if it will make any difference.
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Generally speaking those stacking parameters only make a difference as to what they reject. Median etc will reject more space junk - satellites, meteors, asteroids than an average stack will, otherwise the main object remains the same. Don't use maximum unless you are hunting asteroid trails.