Seagull Nebula (IC 2177) (image is reduced-size | other sizes:  medium , original)

Distance:  3,800 light years

Telescope Takahashi FS-60C @ f/6.2
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 9x20min Ha, 3x5min L (bin1x1); 3x5min ea RGB (bin2x2); AstroArt5, CS4 (slightly cropped, 10xdarks/flats/fdarks/bias)

13 January 2016 - Las Cruces, NM

Published as Astronomy Magazine Picture of the Day, 16 Apr 18 (screenshot).
Published in Astronomical League's quarterly Reflector Magazine, Mar 2017 issue, pg 26 (screenshot).
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This image is LHaRGB, where Ha was used in combination with Luminance and Ha:R (80:20) was used for the Red channel.

Copyright  Jeffrey O. Johnson

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