Shot from Sunnyvale CA, Silicon Valley, light-polluted. Shooting gadgets are same as NGC6960(Veil Nebula)'s. Clip-in type IDAS LPS P2 filter is used. ISO1600, 12 subs of 180 seconds + 6 subs of 240 seconds exposures. One of unprocessed frames (180 sec. exps.) : http://www.urata123.com/X-urata/astro/NGC253/NGC253_original_3min.jpg
2011-11-15 23:56 
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