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M51 - Whirlpool Galaxy (image above is reduced-size crop | other sizes:
30 million light years
||Takahashi TOA-130F @ f/7.7
||Takahashi EM200 Temma II
||QSI 540wsg @ -15C
||Astrodon Tru-Balance I-Series LRGB Gen
||12x15min,7x10min L (bin1x1); 6x5min ea RGB (bin2x2); AstroArt5, CS4 (slightly cropped, 10xdarks/flats/fdarks/bias)
|14 March 2013 - Las Cruces, NM
Published in One Minute
Astronomer, 16 Apr 13.
Process notes: My special thanks to Leonardo
Orazi for sharing his knowledge on improved RGB processing with me!
Copyright Jeffrey O. Johnson