Comet 103P Hartely Gregg Ruppel Image taken: Oct. 14, 2010 Location: Ellisville, MO, USA Details: Comet Hartley was moving rapidly against the background starfield. I guided on the comet head and took 5 minute exposures in RGB. ASA 10N astrrograph + STL11000 CCD. Also applied a Larson-Sekanina rotational gradient filter. ©2013, SpaceWeather.com -- This site is penned daily by Dr. Tony Phillips.