Quote:
Originally Posted by Slawomir
And that is perfectly okay when you have big...huh...pixels  and you end up with stacking 10-20 long subs, but most of us with small...huh...pixels , doing many short subs, can in some circumstances benefit from subtracting bias.
And now some folks are taking about stacking hundreds of very short subs, so I would imagine that subtracting a bias would be essential, otherwise fixed camera patterns may show up with aggressive stretching due to a low SNR in a single short sub. |
Hey you may be right, I was just being slightly flippant
...but my pixels
are only 4.5 micron btw
and I generally only use 5 or 10min subs sometimes less
Mike