Quote:
Originally Posted by naskies
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Yeap, that was what I was interpreting as "normalize and then stack the exposures weighted according to their exposure time" which I had the impression would be different to what Rick said in PixInsight of .... "using normalization Additive with scaling and weighted by noise evaluation" ?
Perhaps they are the same
but I interpreted that PixInsight bases the weighting on a measure of SNR and interpreted that CCDStack weights based on exposure time (it can't do it based on ADU because it's normalised them....) ?