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Jellyfish Nebula (IC 443 / Sharpless 248 (Sh2-248)) (top image is reduced-size | other sizes:  medium , original) Bottom image is an "Ha-only" view

Distance:  5,000 light years

Telescope Takahashi FS-60C @ f/6.2
Mount Takahashi EM200 Temma II
Camera QSI 540wsg @ -10C
Filters Astrodon Ha (3nm), Astrodon Tru-Balance I-Series LRGB Gen 2
Guider SX Lodestar
Settings 7x20min Ha, 3x5min L (bin1x1); 3x5min ea RGB (bin2x2); AstroArt5, CS4 (slightly cropped, 10xdarks/flats/fdarks/bias)

13 October 2015 - Las Cruces, NM

Published as Astronomy Magazine Picture of the Day, 2 Aug 17 (screenshot).
in All About Space magazine, Issue 49, Mar 16, pg 91.
in Cosmic Pursuits, 19 Jan 16.

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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