Sh2-69 (Gary Imm)

Celestial hemisphere: Southern · Constellation: Aquila (Aql) · Contains: PK031+01.1 · Sh2-69

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Sh2-69

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Sh2-69

This object, also known as RCW 177, is a rarely imaged HII emission nebula located 12,000 light years away in the constellation of Aquila at a declination of 0 degrees. The nebula width in our apparent view is 30 arc-minutes which corresponds to a true width of about 100 light years.

Not much has been written about this nebula. I like the central dark void of the nebula and how it seems to be filled with a cluster of stars, although no star cluster has been identified here. I also like the interplay of the brightest blue star with the emission, leading to a purple tint for the right side of the image.

Some refer to this nebula as the Human Head Nebula, which sounds terrible to me but I can see the profile if I tilt my head to the left. The nebula looks like a big set of lips to me, but I am not going to go there.

The tiny planetary nebula PC 20 is seen in the upper left corner of the image as a red ring surrounding an orange star.

Sharpless2 Objects
ZWO ASI183/QHY183
The refractors!
Cloudy Nights
Takahashi Refractors

HII-Dominated Nebulae
Sharpless Catalog (200/313)

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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
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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
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Star trails
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Distribution of data sources

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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.
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	2946227
PixInsight job	LJ6U0R5REIMJ1ZQ75Z0YR7WS5C9UOREB
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	18h44m28s.714
RA (top/left)	18h42m51s.807
RA (top/right)	18h44m57s.830
RA (bottom/right)	18h46m05s.654
RA (bottom/left)	18h44m00s.376

Dec (center)	-00°17′41″.33
Dec (top/left)	-00°15′25″.84
Dec (top/right)	-00°40′57″.53
Dec (bottom/right)	-00°19′56″.64
Dec (bottom/left)	+00°05′35″.60

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