Flame & Horsehead Nebulae #4 (Molly Wakeling)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 48 sig Ori · 50 zet Ori · Alnitak · B33 · Flame Nebula · Horsehead nebula · IC 432 · IC 434 · IC 435 · LBN 944 · LBN 946 · LBN 950 · LBN 953 · LBN 954 · NGC 2023 · NGC 2024 · Orion · Orion B · PGC 178620 · PGC 3081049 · PGC 3081050 · PGC 3097143 · Sh2-277 · The star Alnitak (ζOri) · The star σOri · VdB51

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Flame & Horsehead Nebulae #4

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Flame & Horsehead Nebulae #4

The Flame & Horsehead Nebulae!
I last tried to image this incredible scene back in 2017, and it just hasn't worked out to image it since then! I'm really pleased with how it turned out.

These two nebulae are in the constellation Orion -- in fact, the brightest star seen here is the easternmost (leftmost here in the Northern hemisphere) star of Orion's Belt. These two nebulae are difficult to see visually because our eyes are not very sensitive to red, but I have seen them a few times in big Dobsonians with nebula filters.

The Flame Nebula is the one on the left -- I always think it kind of looks like a leaf in the fall. The super bright star in the middle there, Alnitak, shines very brightly in UV light, which strips electrons out of the dust clouds surrounding it, causing it to glow. Between that nebula and us lies a light-absorbing cloud of dark nebula, giving the leaf-like network. The Horsehead Nebula is a dark nebula backlit by stellar-windswept clouds of red-glowing hydrogen gas, energized by the star Sigma Orionis, which is the bright star up above the Horsehead (which is actually a double star system). The streaming effect comes from magnetic fields.

The two nebulae are about 1,375 lightyears away. The Horsehead, while it doesn't look that big, is actually about 4 lightyerars tall (that's 23 trillion miles)!

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The data entry was having some problems, so here are the date details:
Date: 18 September, 17, 19 October, 5, 8, 22, 23, 28, 30 November, 2, 3, 4, 6, 8, 11, 12 December 2021

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Status	Advanced success
Started	...
Astrometry.net job	5329581
PixInsight job	STL05NAWS6ZOJ4ZLTWDYOB9XRVU9R9MW
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h41m26s.77
RA (top/left)	05h37m18s.40
RA (top/right)	05h37m24s.70
RA (bottom/right)	05h45m35s.31
RA (bottom/left)	05h45m28s.94

Dec (center)	-02°10′32″.7
Dec (top/left)	-01°29′43″.3
Dec (top/right)	-02°53′28″.2
Dec (bottom/right)	-02°51′19″.0
Dec (bottom/left)	-01°27′37″.3

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Flame & Horsehead Nebulae #4

Flame & Horsehead Nebulae #4

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Flame & Horsehead Nebulae #4

Flame & Horsehead Nebulae #4

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