5/3/2013 from Sunnyvale CA USA VC200L of 1800mm FL with a self modified EOS KISS X2 (XSI or 450D) with IDAS LPS-P2 filter, ISO1600 sub exposures of 180 seconds, 20 lights, 10 darks and 10 flats, processed with PS CS5, Noise Ninja and Olympus Background extraction