Testing Out the SBIG ST-2000XM CCD on M31

15 Minute Luminance Exposure

The last few nights have been crystal clear, which gave me a great opportunity to test out my latest purchase (used of course).  I bought a 10 year old SBIG ST-2000xm, which is a  CCD (“Charged Coupled Device”) camera and is strictly used for Astrophotography.  The image above is a 15 minute (L) exposure.  I have not learned the art of stacking multiple images yet but the theory behind image stacking is the more images you stack, the more you increase the signal and decrease the noise.  There is so much more detail that I am lacking as just taking a single exposure in Lumiance, I am missing the Red, Green, and Blue (RGB) color spectrum.

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