M66 up close and personal C14 Edge (MARK Shelton)

M66 up close and personal C14 Edge

Revision title: M66 reshoot

Messier 66 or M66, also known as NGC 3627, is an intermediate spiral galaxy in the southern, equatorial half of Leo. It was discovered by French astronomer Charles Messier[8] on March 1, 1780, who described it as "very long and very faint".[9] This galaxy is a member of a small group of galaxies that includes M65 and NGC 3628, known as the Leo Triplet, or the M66 Group.[10] M65 and M66 make a popular pair for observers, being separated by only 20′.[9]

M66 has a morphological classification of SABb,[5] indicating a spiral shape with a weak bar feature and loosely wound arms. The isophotal axis ratio is 0.32, indicating that it is being viewed at an angle.[5] M66 is receding from us with a heliocentric radial velocity of 696.3±12.7 km/s.[3] It lies 31[4] million light-years away and is about 95 thousand light-years across[11] with striking dust lanes and bright star clusters along sweeping spiral arms. As of 2018, five supernovae have been observed in M66: SN 2016cok,[12] 2009hd, 1997bs, 1989B, and 1973R.[13] The one detected in 2016, SN 2016cok was discovered by the All-Sky Survey Automated Survey for Supernovae, and it has been categorized as a Type IIp supernova.[14]

Gravitational interaction from its past encounter with neighboring NGC 3628 has resulted in an extremely high central mass concentration; a high molecular to atomic mass ratio; and a resolved non-rotating clump of H I material apparently removed from one of the spiral arms. The latter feature shows up visually as an extremely prominent and unusual spiral arm and dust lane structures as originally noted in the Atlas of Peculiar Galaxies.[15]

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Title: M66 reshoot

Description: The start of my new session- so I decided to have a go at reshooting and processing M66. No old data is in this image. It is current about 3 hours of new data taken with the C14 on the ASi6200 using a 3x3 bin & Baader LRGB filters.

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Status	Advanced success
Started	...
Astrometry.net job	5377326
PixInsight job	F7QV5KSNGX3CR9XWJ0OVKIRJ8JKI222K
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	11h20m13s.316
RA (top/left)	11h19m53s.259
RA (top/right)	11h19m19s.742
RA (bottom/right)	11h20m33s.395
RA (bottom/left)	11h21m07s.740

Dec (center)	+12°59′32″.71
Dec (top/left)	+13°13′54″.77
Dec (top/right)	+12°51′44″.86
Dec (bottom/right)	+12°45′06″.13
Dec (bottom/left)	+13°07′19″.25

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