Nebula Ring M57 (Stephen Heliczer FRAS)

Celestial hemisphere: Northern · Constellation: Lyra (Lyr) · Contains: IC 1296 · M 57 · NGC 6720 · PK063+13.1 · Ring Nebula

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Nebula Ring M57

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Nebula Ring M57

Reprocess of The Ring Nebula (M57) is a small planetary nebula in the northern constellation of Lyra about 2,500ly away. Also, you can clearly see the very feint bar spiral galaxy IC 1296, about 250 Million light years away. Such a nebula is formed when a star, during the last stages of its evolution before becoming a white dwarf, expels a vast luminous envelope of ionized gas into the surrounding interstellar space. In my capture from the weekend you can clearly see the central star and just about see the faint outer shells.

Taken with Edge HD8, ZWOASI294MC, Lecerta guiding, 4 hours of integration, 240 x 1 min exposures, sharpcap, APP.

This nebula was discovered by the French astronomer Charles Messier while searching for comets in late January 1779. Messier and German-born astronomer William Herschel speculated that the nebula was formed by multiple faint stars that were unresolvable with his telescope. In 1864, English amateur astronomer William Huggins examined the spectra of multiple nebulae, discovering that some of these objects, including M57, displayed the spectra of bright emission lines characteristic of fluorescing glowing gases. Huggins concluded that most planetary nebulae were not composed of unresolved stars, as had been previously suspected, but were nebulosities. The nebula was first photographed by the Hungarian astronomer Eugene von Gothard in 1886.

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Status	Advanced success
Started	...
Astrometry.net job	4769411
PixInsight job	UT60K01MLPTVHAK2URICA13GP5BHJDPQ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h53m35s.661
RA (top/left)	18h52m42s.253
RA (top/right)	18h54m07s.674
RA (bottom/right)	18h54m29s.243
RA (bottom/left)	18h53m03s.489

Dec (center)	+33°01′50″.50
Dec (top/left)	+32°55′05″.36
Dec (top/right)	+32°50′36″.68
Dec (bottom/right)	+33°08′32″.77
Dec (bottom/left)	+33°13′02″.92

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