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Stacks and raw frames

Posted: Mon May 19, 2025 9:13 pm
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!

Re: Stacks and raw frames

Posted: Tue May 20, 2025 3:19 pm
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