Caldwell 73 NGC 1851br/Constellation: Columba br/Mag: 7.1 br/Distance: 55000 ly br/Type: Globular Cluster br/Imaging Location: Rusty RV Ranch Rodeo New Mexico br/Imaging Platform: Astro Tech 8" Newt F4 QSI583wsg Astrodon filters br/Mount: CGEM br/Guiding Setup: Lodestar OAG br/Exposure: 1x300 RGB br/Date: 2011-03-26 br/Software: MaximDL, Images Plus, RegiStar, Photoshop CS4