M82 Supernova (before and after)

This is an image of the recent supernova in M82. Both the before and after images were processed similarly although the before shot is from a much deeper exposure. The after shot was taken on a night of rather poor seeing and with gusty winds. The wind ruined all but seven of the two minute subs so it is not a very deep exposure. Mouse over to blink the two images.
Object M82 RA 9:55.9 Dec 69:41
Exposure 14 minutes (7 X 2 minutes)
ISO 1600
Camera Canon 60Da DSLR
Optics Prime focus of a 200mm SkyWatcher f/5 Newtonian reflector with a Televu Paracor for a total focal length of 1150 mm
Location

St. Croix, Nova Scotia

Processing This image was processed entirely in Images Plus. Calibration, stacking and masked arcsine stretch in Images Plus . Masked noise reduction , sharpening and contrast enhancement applied in Images plus. Image binned and cropped.