082:M51　Whirlpool Galaxy　子持ち銀河 – 2010/04/26

去年に続き再挑戦 Vixen VC200L with Vixen focal reducer Orion Sirius EQ-G mount with Canon EOS T1i Stacking with DeepSkyStacker of: 10 frames of 90 seconds Exposure at ISO of 3200 10 dark and 10 flat frames 7/14/2010 in Sunnyvale California USA