Stacks and raw frames

Discussions of Electronically Assisted Astronomy using the Live Stacking feature.
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cdanil
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Joined: Sun Dec 26, 2021 4:04 am

Stacks and raw frames

#1

Post by cdanil »

Hi Robin,

Please confirm my understanding: raw frames are saved without any calibration, preprocessing or adjustments. The aligned stack, saved as raw (32 bit) includes calibration with darks and flats as well as preprocessing (banding suppression, background subtraction, satellite trail removal) but excludes adjustments (histogram, noise reduction, sharpening). The aligned stack saved with adjustments includes all of the above. Thanks!
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admin
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Re: Stacks and raw frames

#2

Post by admin »

Hi,

yes, that's correct - the raw frames are exactly as they come from the camera so that you can do a full reprocess later if you want. Processing like darks/flats/satellite removal is done on each frame *before* it is added to the stack, so the saved stack contains those corrections.

cheers,

Robin
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