CTB 1, Abell 85 (Greg Erianne)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD224403 · HD224669 · HD224892 · HD224939 · LBN 576

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CTB 1, Abell 85

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CTB 1, Abell 85

CTB 1 (“Garlic Nebula”, “Medulla Nebula”) was initially identified by George Abell as planetary nebula, Abell 85, but was later identified as a supernova remnant (G116.9+0.1) in 1972. The CTB designation is from the Caltech Observatory list B catalogue. The designation Abell 85 is still used today.CTB 1 is in the constellation Cassiopeia (Cas) and is approximately 10,000 light-years from Earth, about 100 light-years in diameter, and is estimated to have formed about 10,000 years ago. It is nearby several other emission nebulae: Sh2-170 (the dot in the Cosmic Question Mark), Sh2-168, and Sh2-173 to name a few.It has an interesting circular structure with many filamentary structures as well as a rupture in its shell (on the upper right of the photo), has a slim and faint OIII signal on part of its shell, and is surrounded by additional nebulosity.

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
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Mix of multiple sources
Other
Unknown

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	8569192
PixInsight job	QYYDZ6HZ3GZ863IEDLE2UDKB0VW2A4MG
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h59m16s.80
RA (top/left)	00h04m07s.32
RA (top/right)	00h02m21s.20
RA (bottom/right)	23h54m11s.32
RA (bottom/left)	23h56m23s.41

Dec (center)	+62°29′52″.6
Dec (top/left)	+61°43′26″.2
Dec (top/right)	+63°23′27″.3
Dec (bottom/right)	+63°15′41″.10
Dec (bottom/left)	+61°36′02″.7

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CTB 1, Abell 85

CTB 1, Abell 85

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CTB 1, Abell 85

CTB 1, Abell 85

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