M 57: The Ring Nebula (Glenn Diekmann)

Celestial hemisphere: Northern · Constellation: Lyra (Lyr) · Contains: IC 1296 · M 57 · NGC 6720 · PGC 2017638 · PGC 2020007 · PGC 2021791 · PGC 2024204 · PGC 2813536 · PGC 2813611 · PGC 2813669 · PGC 2813726 · PGC 2813749 · PGC 2813775 · PGC 2813776 · PGC 2813834 · PGC 2813850 · PGC 2813896 · PK063+13.1 · Ring Nebula

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M 57: The Ring Nebula

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M 57: The Ring Nebula

The Ring Nebula is the prototypical planetary nebula first described by Antoine Darquier de Pellepoix and Charles Messier in 1779. William Herschel later introduced the term "planetary nebulae" to describe such objects. The layered shell of ionized gas represents the atmosphere cast off by a star in its final phases of life. In the center of the nebula is a 15th-magnitutde white dwarf star, representing the naked core of the red giant star whose atmosphere produced the spectacular rings. The Ring Nebula is estimated to be about 2000 LY away and originated 6000–8000 years ago.

I am still fine tuning my imaging Newtonian and this is another test image. The short integration was not enough to bring out M57's faint outer shell of gas. Shooting during a full moon certainly did not help. The stars near the edge of the field were pretty terrible and had to be cropped out. I suspect poor collimation is the issue, and I plan to go through everything with a fine-toothed comb again.

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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
Backyard
Traveller
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Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
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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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	4682444
PixInsight job	K8DF74WIF0UYQMJ8KG852J03HZHIJFFM
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	18h53m35s.160
RA (top/left)	18h51m40s.660
RA (top/right)	18h55m30s.717
RA (bottom/right)	18h55m31s.500
RA (bottom/left)	18h51m38s.887

Dec (center)	+33°01′42″.47
Dec (top/left)	+32°44′10″.87
Dec (top/right)	+32°44′17″.85
Dec (bottom/right)	+33°19′08″.30
Dec (bottom/left)	+33°19′00″.56

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M 57: The Ring Nebula

M 57: The Ring Nebula

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M 57: The Ring Nebula

M 57: The Ring Nebula

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