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OBJECT

Elephant's Trunk Nebula in IC 1396 (top image is reduced-size | other sizes:  medium , original) Bottom image is an "Ha-only" view

Distance:  3,000 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 9x20min Ha, 4x5min L (bin1x1); 4x5min ea RGB (bin2x2); AstroArt5, CS4 (slightly cropped, 10xdarks/flats/fdarks/bias)
Date/Location

Notes
13 October 2015 - Las Cruces, NM

Published as Astronomy Magazine Picture of the Day, 11 Feb 16 (screenshot).

This image is LHaRGB, including 3 hours of Ha data, 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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