M83
The Southern Pinwheel Galaxy

About this image.

M83 was discovered by Abbe Nicholas Louis de la Caille at the Cape of Good Hope on February 23, 1752; Thus it became the first galaxy to be discovered beyond the Local Group, and the third of all galaxies, after M31 and M32. It was next cataloged by Charles Messier on February 17, 1781; from his mid-northern location in Paris (at 49 degrees Northern latitude), it is such a difficult object that he stated that: "One is only able with the greatest concentration to see it at all."

Text taken from www.seds.org

Equipment

Telescope:                 12.5" Ritchey Chretien by RC Optical Systems
Mount:                      Paramount ME by Software Bisque
Instrument:               STL11000M CCD Camera by SBIG with AO-L

This is an LLRGB image.
Exposures:                 300:90:90:90 minutes.
Capture Software:       CCDAutopilot V3.40, CCDSOFT V5
Processing:                Maxim DL/CCD, Photoshop CS, Registar, CCDSTACK     

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