I seemed to have mistakenly shot 2 nights of OIII data with different gain and offset, g75 o15 and g139 o21. I still don't know how it happened, but it happened.
How would you Masters of Processing go about calibrating and combining these two sets in PixInsight? My imaging train remained the same between both nights, so I have one set of flats for both.
Edited by jerahian, 19 February 2020 - 10:23 PM.