Sky this Week

NGC 6621 and NGC 6622 (Arp 81) are a strongly interacting pair of galaxies in the constellation Draco. The tidal arm extending up and to the left of NGC 6622 is just barely visible in the below image. Image was taken on May 21, 2006 at 01:53 am MDT with Celestron Nexstar11 telescope, Meade F3.3 focal reducer, and Astrovid Stellcam2 video camera. Temperature was 59°F, sky clear, transparency very good, no wind, location Lousiville, CO.