M20

Object M20  Object RA 18:02.7 Dec +22:58
Exposure 28 minutes (14 X 2 minutes)
ISO 21600
Camera Canon 350D DSLR
Optics 8" f/4 Schmidt Newtonian Telescope
Location St. Croix Observatory
Processing Calibration and stacking done with Deep Sky Stacker. Background correction and noise reduction applied then the stars were separated from the rest of the image. This allowed different stretches to be applied to the nebula and the stars. A slight gradient was removed from the nebula image and the star colour was enhanced. A slight tracking error was removed from the star layer and the red enhanced in the nebula layer. Finally the star and nebula layers were recombined to produce the final image.