This image is a combination of 3 layers. Layer 1 25- images each with an exposure of 300 seconds through a HYDROGEN ALPHA filter. Layer 2 24- images each with an exposure of 300 seconds through a OXYGEN III filter. Layer 3 23- images each with an exposure of 300 seconds through a SULFUR II filter. The images were taken with a SBIG STT-8300 3 CCD Camera attached to a Centurion 18” F/2.8
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