MESSIER 51- "Whirlpool Galaxy"
(NGC 5194/5)

Celestron Fastar 8 at f/1.95, PixCel 237.  This LRGB image was assembled from a 600 second (five by 120 seconds Track and Accumulate) monochromatic file, and composite RGB images (each five by 120 seconds Track and Accumulate). The RGB exposure ratio was 1:1:1.  All images were unguided at -28 degrees Celsius, using the AP900.  Image assembled in Adobe Photoshop.  L layer was modified with unsharp masking. RGB files registered in CCDOPS v4.0.


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