Celestial hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Horsehead nebula  ·  IC 431  ·  IC 432  ·  IC 434  ·  IC 435  ·  NGC 2023  ·  NGC 2024  ·  The star Alnitak (ζOri)  ·  The star σOri
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The Horsehead Nebula in Ha and RGB, Dominique Callant
The Horsehead Nebula in Ha and RGB
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The Horsehead Nebula in Ha and RGB

Equipment

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Acquisition details

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Description

Combination of

50x180s ASI1600 MM cool (@unity Gain) with a Baader Ha 35mm filter and a WO 71 Star SQM 18.92 February 5, 2018

and 55x180s with a Canon 6DAW through an Esprit 100 f5.5 SQM18.40 on February 21, 2018

Comments

Sky plot

Sky plot

Histogram

The Horsehead Nebula in Ha and RGB, Dominique Callant