I was surprised how much of the HII starburst area came out on this one as I was barely seeing anything when capturing the HA data. After the subs were stacked and levels boosted they suddenly exploded into view. The image was cropped and zoomed a little bit. M82 is actually smaller than I expected. I guess it just looks bigger in the eyepiece due to its surface brightness.
M82 Cigar Galaxy in Ursa Major
C14 & Hyperstar AP1100GTO
ASI178MM-c & Baader LRGB & HA filters
90 subs for Lum 30 subs each RGB @ 30 sec.
20 subs HA @ 90 sec.
Captured in Nebulosity processed in PI & PS CC