M27 Dumbbell Nebula Image
I have imaged M27 before using RGB filters, but this time I decided to use narrowband filters. I used Hydrogen Alpha (Ha) and Oxygen III (OIII).
This image was taken on a Meade 127mm triplet telescope with an Atik 314L+ CCD camera. The exposures were 3 minutes long each, about 10 of Ha and 10 of OIII were stacked and aligned.
I then mapped Ha to Red, and the OIII to both Green and Blue.