Dark & Flat Frames for Sub-Frame Images that use Pan/Tilt
Posted: Wed Oct 28, 2020 10:31 am
If one was to use Pan/Tilt to take LiveStack images for a region that is offset centred, and are using Pre-Processing with Subtract Darks and Apply Flats, does one need to use Dark and Flats that were created using the same pan/tilt settings (which would be fairly impractical to plan ahead for) or can the pre-processing automatically select the required bit of dark and flat from larger sized full frame files for its needs ?
(I'm used to Reduction of CCD Images in CCDSoft where a full frame Flats/Darks can be used to reduce a sub-frame lights, provided there they have the same binning, the subframe has the necessary position info (equivalent to its pan & tilt in its fits header) )
David
(I'm used to Reduction of CCD Images in CCDSoft where a full frame Flats/Darks can be used to reduce a sub-frame lights, provided there they have the same binning, the subframe has the necessary position info (equivalent to its pan & tilt in its fits header) )
David