CTB-1 - The Medulla Nebula (SNR) in Cassiopeia (Fran D.)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: 9 Cas · HD134 · HD163 · HD223987 · HD224055 · HD224215 · HD224403 · HD224669 · HD224892 · HD224939 · HD225160 · LBN 576 · The star 9 Cas

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CTB-1 - The Medulla Nebula (SNR) in Cassiopeia

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CTB-1 - The Medulla Nebula (SNR) in Cassiopeia

CTB-1 is a supernova remnant in the constellation Cassiopeia. It has various catalog designations, such as Abell 85 and LBN 576.

In 1966 the American astronomer George Ogden Abell discovered this nebula and mistakenly thought it was a planetary nebula. He cataloged it in his Catalog of Planetary Nebula as Abell 72; it was later re-cataloged as Abell 85.

In 1959, R. W. Wilson and J. G Bolten of the California Institute of Technology Radio Observatory did a survey of galactic radiation . This area was listed as number 1 (CTB 1, CTB = Caltech Observation List B), having a diameter of about 1 degree. In 1968 CTB 1 was confirmed to be a supernova remnant by A. Poveda and L. Woltjer.

In 1965 the American astronomer Beverly T. Lynds published her catalog of bright nebulae. The nebula is listed there as H-II region LBN 116.81+00.03 (LBN 576)

This is a relatively weak target for imaging. The nebula has relatively strong HA and SII emissions, while the OIII is mostly confined to the bubbles outer shell. The nebula appears as a gas bubble resembling a cross section through the human brain and spinal cord (called the medulla oblongata). Hence the nickname the Medulla Nebula among amateur astronomers.

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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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Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Status	Advanced success
Started	...
Astrometry.net job	8353958
PixInsight job	THQ4IHYB7X6C4WFX36CEGYARNE1264VO
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h59m34s.563
RA (top/left)	23h53m53s.249
RA (top/right)	23h52m42s.350
RA (bottom/right)	00h04m51s.616
RA (bottom/left)	00h06m56s.278

Dec (center)	+62°27′28″.63
Dec (top/left)	+63°35′10″.89
Dec (top/right)	+61°26′25″.00
Dec (bottom/right)	+61°18′57″.72
Dec (bottom/left)	+63°27′13″.47

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CTB-1 - The Medulla Nebula (SNR) in Cassiopeia

CTB-1 - The Medulla Nebula (SNR) in Cassiopeia

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CTB-1 - The Medulla Nebula (SNR) in Cassiopeia

CTB-1 - The Medulla Nebula (SNR) in Cassiopeia

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