This image is a combination of 4 layers. Layer 1 is Luminance was an exposure of 300 seconds Layer 2 is Red is a combination of 13 images, each of 300 seconds. Layer 3 is Green is a combination of 13 images, each of 300 seconds. Layer 4 is Blue is a combination of 13 images, each of 300 seconds. Each of the images was corrected with a dark frame and a flat field. The images taken with a AltaU-32 attached to an telescope.