This image is a combination of 3 layers. Layer 1 exposure of 900 seconds through a red filter. Layer 2 exposure of 900 seconds through a green filter. Layer 3 exposure of 900 seconds through a Blue filter. The images were taken with an ST-8300 attached to a Centurion 18” F/2.8 telescope and all were corrected with both a dark frame and a flat field.
Click here for the full resolution image