M42 - Great Nebula in Orion                        (image above is reduced-size | other sizes:  medium , original)

Distance:  1,344 light years

Telescope Takahashi TOA-130F @ f/7.7
Mount Takahashi EM200 Temma II
Camera QSI 540wsg @ -15C
Filters Astrodon Ha (3nm), Astrodon Tru-Balance I-Series LRGB Gen 2
Guider SX Lodestar
Settings 1x10min,3x5min Ha; 8x5min L (bin1x1); 3x5min ea RGB (bin2x2); AstroArt5, CS4 (slightly cropped, 10xdarks/flats/fdarks/bias)

28 March 2014 - Las Cruces, NM

This image is LHaRGB, where Ha:L (80:20) was used for Luminance. Result is my first try at blending a mask of long/short subs to show detail in the bright center. Clearly I went a bit long for the RGB subs, so overexposed color channels in the central Trapezium area, oh well :)

Copyright  Jeffrey O. Johnson

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