Iris Nebula with Canon 60Da

Left click on the image to see a 50 percent crop of the central area.
Object Iris Nebula - object RA 21:01:37 Dec +68:09:48
Exposure 112 minutes (28 X 240 seconds)
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

St. Croix Observatory, St. Croix, Nova Scotia

Processing Calibration, stacking, arcsin stretch, masked contrast enhancement, high pass filtering, masked star reduction in Images Plus beta 5. Masked noise reduction applied in Paint Shop Pro . Image binned to resize for web display in Images Plus.