The Horsehead and the Flame (JohnAdastra)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 48 sig Ori · 50 zet Ori · Alnitak · B33 · Flame Nebula · Horsehead nebula · IC 431 · IC 432 · IC 434 · IC 435 · LBN 944 · LBN 946 · LBN 953 · LBN 954 · LBN 958 · LBN 962 · LDN 1635 · LDN 1636 · NGC 2023 · NGC 2024 · Orion · Orion B · Sh2-277 · The star Alnitak (ζOri) · The star σOri · VdB51

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The Horsehead and the Flame

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The Horsehead and the Flame

The Horsehead and the Flame Nebulae - LDN 1730 and NGC 2024

Finally had a chance to finish processing this data accumulated over many nights this winter. Due to my southern tree line, this object is only visible for an hour per day, so limited opportunity and lack of clear skies presented quite a challenge.

After performing integration with PixInsight WeightedBatchPreProcessing, Mure Denoise was employed on the master lights from the Ha, SII and OIII channels to smooth the fairly noisy backgrounds. The OIII channel in particular had an extremely bad gradient which was removed with DBE, but which left quite a few black pixels. Upon using Channel Combination in the HSO order, StarXTerminator AI8 was employed to create a starless image, my first use of that recently released process iteration. Even after star removal, the bright stat Alnitak still left considerable residuals which needed to be addressed with some CloneStamp substitutions.

Color saturation and deconvolution were performed on the starless image, which was further enhanced by addition of a starless Ha layer to increase brightness and sharpen details. The NB stars created from StarX AI8 were adding back with simple application of PixelMath.

Subframes collected over the evenings of 12/20 and 12/26/2021 and 1/8, 1/11, 1/18, 1/25, 1/31 and 2/5/2022.

Northeast Imagers
LVAAS Astroimaging
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Light Polluted skies

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Advanced success
Started	...
Astrometry.net job	5613453
PixInsight job	NMB2H2F4PJRR7HP3GG2Y3QCCGDRQVH3D
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h41m12s.17
RA (top/left)	05h37m45s.17
RA (top/right)	05h39m07s.46
RA (bottom/right)	05h44m38s.86
RA (bottom/left)	05h43m17s.42

Dec (center)	-02°17′43″.4
Dec (top/left)	-01°25′44″.4
Dec (top/right)	-03°23′56″.0
Dec (bottom/right)	-03°09′13″.5
Dec (bottom/left)	-01°11′12″.8

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The Horsehead and the Flame

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