The Pinwheel Galaxy (M33) in Triangulum

on Monday, April 25, 2011

by Albert Barr

Taken through LB-0003: 14.5-inch (0.37-meter) RC Optical Systems Ritchey-Chretien reflector with ion-milled optics at f/9.0 on a Software Bisque Paramount ME German Equatorial mount, Apogee Alta U16M CCD camera, RGB image with 1 hour of exposure through each filter

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