M33 - NGC 598 (Triangulum Galaxy) + H-alpha         (click either [top or bottom] image for full-scale)

Distance:  3 million light years
Top image = final LHaRGB result. Bottom image compares LRGB to LHaRGB.

Telescope Takahashi TOA-130F @ f/7.7
Mount Takahashi EM200 Temma II
Camera QSI 540wsg @ -10C
Filters Astrodon Tru-Balance I-Series LRGB Gen 2, Astrodon Ha (3nm)
Guider SX Lodestar
Settings 13x10min L; 1x20min,1x10min Ha (bin1x1); 5x3min ea RGB (bin2x2); AstroArt5, PS7/CS4 (slightly cropped, 10xdarks/flats/fdarks/bias)

23 September 2013 (Ha), 6 November 2012 (LRGB) - Las Cruces, NM

Published as Astronomy Magazine Picture of the Day, 29 Jan 14 (screenshot).
Published in YahooNews, 17 Jan 14 (screenshot).
in, 16 Jan 14 (screenshot).
16th slot in "January 2014 Night Sky Photos"
in One-Minute Astronomer, 8 Oct 13.

Process notes: Some details on "Ha" and this image are in my blog, HERE.

Copyright  Jeffrey O. Johnson

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