#M31 - 6 hours HaLRGB (and counting) but need some help

3 messages · Page 1 of 1 (latest)

lapis basin
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SW 72ED & ASI1600mm including all unstacked subs and calibration files. Intend to add another 4+ hours however...

There is something wrong with my green flats. Most noticeable as a donut or ring around the master flat but visible in the individual flats too (but not dark flats) and Its the same over several nights of flats. The green channel actually stacks up really nicely with the blue flat but its not ideal obvs. I'm just copying the files

Theres defo some good data there though looking at the quick stack, DBE and stretch picture (also attached). All unstacked files here too so useful for anyone who doesnt have a scope yet and wants practice stacking. Just uploading to the below location
https://drive.google.com/drive/folders/1QemhjhBNC0PMolD_j20ybBpcGYAN6g4k?usp=sharing

cobalt yoke
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RGB stacks only.