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NGC 5316 (4in f4.5 20Da).jpg
Open cluster NGC 5316 in Centaurus-- nebulosity at lower right is Gum 48D, at upper left is RCW82. Shot with 4-inch Astro-Physics refractor at f/4.5 with compressor/field flattener and with APS-frame size Canon 20Da camera at ISO800 for stack of 4 x 4 minute exposures. Shot from Coonabarabran, Australia, March 24, 2007.