5146 - Cocoon Nebula (image above is
reduced-size | other sizes: medium
3,300 light years
Takahashi TOA-130F @ f/7.7
Takahashi EM200 Temma II
QSI 540wsg @ -15C
Astrodon Ha (3nm), Astrodon Tru-Balance I-Series LRGB Gen
11x10min Ha, 4x5min L (bin1x1); 5x5min ea RGB
(bin2x2); AstroArt5, CS4 (uncropped, 10xdarks/flats/fdarks/bias)
27 August 2017 - Las Cruces, NM
Published in Astronomical
League's quarterly Reflector Magazine, Mar 2018 issue,
pg 27 (screenshot).
This image is LHaRGB, where Ha was used in combination with Luminance and
Ha:R (80:20) was used for the Red channel.