C14 at F4, ST7, 45 min Luminance, 15 min RGB
The greenish middle portion is evidence of excited oxygen atoms, while the outer red is predominantly light from nitrogen and hydrogen.
The Helix, located in the constellation of Aquarius, is a favorite for late summer and autumn observing. It is easy to find and it is big. It is not very bright however so you might miss it with a smaller scope.