Sharpless 261 - Lower's Nebula (Timothy Martin)

Celestial hemisphere: Northern · Constellation: Orion (Ori) · Contains: 69 Ori · 69 f01 Ori · HD251106 · HD251155 · HD251179 · HD251180 · HD251212 · HD251235 · HD251346 · HD251347 · HD251374 · HD251395 · HD251396 · HD251497 · HD251512 · HD251536 · HD251563 · HD251597 · HD251631 · HD251632 · HD251652 · HD251680 · HD251704 · HD251732 · HD251767 · HD251855 · HD251900 · HD251924 · HD251925 · HD251978 · And 52 more.

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Sharpless 261 - Lower's Nebula

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Sharpless 261 - Lower's Nebula

This is Lower's Nebula, designated Sharpless 261, and named after Harold and his son Charles Lower who discovered it in 1939. This emission nebula doesn't get a lot of love in the astronomical community, but it's quite an interesting formation. Located between the Perseus and Orion constellations about 3,200 light years away, this thing is pretty large. It is approximately 30 light years in diameter and has an apparent size in the sky about twice that of the full moon. Its relative faintness at mag 10.0 and proximity to the popular formations in Orion may account for why it is so consistently ignored. But the Accidental Astronomers are all about finding things no one else cares about. 😉

I shot this in Big Bend in November with the small William Optics 61mm refractor--another testament to what a good, small telescope can do. I intend to pursue a closer study of portions of this region with the C11 at some point. My wife refers to this one as "Pinky *in* the Brain."

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Description: More retreatment with the RC tools. This time with a more HOO look.

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Emission Nebulas

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Status	Advanced success
Started	...
Astrometry.net job	7111049
PixInsight job	QYRT79IRRHN16N6YL5LYFB4XGWHCJCFS
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h08m57s.97
RA (top/left)	06h13m21s.92
RA (top/right)	06h04m09s.78
RA (bottom/right)	06h04m35s.62
RA (bottom/left)	06h13m43s.95

Dec (center)	+15°42′40″.3
Dec (top/left)	+16°32′02″.7
Dec (top/right)	+16°23′38″.5
Dec (bottom/right)	+14°52′42″.7
Dec (bottom/left)	+15°01′16″.4

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Sharpless 261 - Lower's Nebula

Sharpless 261 - Lower's Nebula

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Sharpless 261 - Lower's Nebula

Sharpless 261 - Lower's Nebula

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