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Thanks Mike! Next version will have no decon. Promise. 
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He, he I'm a pain huh?
To me at least, seeing something (like a little noise) that's been left in an image, ie not processed out is quite ok but seeing detail or features that have been essentially added in via processing is quite another
..like Smallpox and with your help we can eventually eradicate this bad habit from the face of astroimaging, so help me Go..?..Big Bang
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Up to four panels now. Realized we're making a big mistake. Some panels are done under essentially full moon, and other overlapping panels under new moon. My data rejection algorithm (for cosmic rays, hot pixels, bad columns, etc) is really struggling with this. Even after my best attempt at normalization it's chucking out say the entirety of the full moon panel as an "outlier". What we need to do is to only do data rejection only within panels (eg south-west corner), and only on sets taken under similar conditions.   Probably avoiding the full moon would be a good idea too, but it's been so clear!
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Ah yes a significant stumbling block by the sounds of it...
