[glend (Glen)]

So who has used double stacking to boost data signal levels? By this i mean taking say 30 or more good subs (of the same filter obviously) and after stacking registering and calibrating them to a final stacked image, copying that image and stacking to combine again with the original; or even just making copies of all 30 subs to yield 60 subs prior to processing. This is before any subsequent final processing, stretching, etc. Does this not effectively boost signal levels? Now the assumption is that you have a very low noise camera and good dark calibration has been done. I realise that any residual noise, pattern etc could also be doubled in strength.
Anyone done this? Is it a 'cheat'?