NGC 6572 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Ophiuchus (Oph) · Contains: NGC 6572 · PK034+11.1

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NGC 6572

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NGC 6572

This object is a rarely imaged tiny planetary nebula located 5000 light years away in the constellation of Ophiuchus at a declination of +6 degrees. The nebula spans only 15 arc-seconds in our apparent view, which corresponds to a diameter of less than one-half of a light year. Its apparent diameter lies between that of Venus and Saturn.

100 years ago this object was described as one of the most curious objects in the heavens, a star surrounded by a bright green ellipse of fuzzy light. This was before much was really known about planetary nebula, but even today this object is a wonder. This object is two magnitudes brighter than M57 (the Ring Nebula) but 5 times smaller.

The object is so tiny that not much structure is visible. But in the full resolution view it is possible to make out a very faint central star, surrounded by a white central torus area, and then a blue bi-polar oval shape with OIII as the dominant gas.

For an object that is so small, it goes by many nicknames, including the Green Emerald, the Blue Racquetball, and the Turquoise Orb. It is interesting that different observers have reported the color of this nebula as blue, green, and all shades in between.

The refractors!
Cloudy Nights
Planetary Nebulae
Takahashi Refractors
ZWO ASI183/QHY183

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Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
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.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
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	2991105
PixInsight job	C0Z8HGHKV29LFWRQPQVN6OL4V2RWACND
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	18h12m06s.370
RA (top/left)	18h12m06s.767
RA (top/right)	18h11m30s.795
RA (bottom/right)	18h12m05s.967
RA (bottom/left)	18h12m41s.960

Dec (center)	+06°51′13″.41
Dec (top/left)	+07°00′44″.88
Dec (top/right)	+06°47′39″.47
Dec (bottom/right)	+06°41′41″.96
Dec (bottom/left)	+06°54′47″.11

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NGC 6572

NGC 6572

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NGC 6572

NGC 6572

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