This image is a combination of 4 layers. Layer 1 10- images each with an exposure of 120 seconds through a RED filter. Layer 2 10- images each with an exposure of 120 seconds through a GREEN filter. Layer 3 10- images each with an exposure of 120 seconds through a BLUE filter. This used 2x2 binning. Layer 4 31 - images each wtih an exposure of 120 seconds. This used 1x1 binning. The images were taken with a SBIG STT-8300 3 CCD attached to a Meade LX200R 12" F/10
The system used a self guider.
Click here for the full resolution image