13.7magnitude (faint) Comet 117P/Helin-Roman-Alu Slips By Globular Cluster M69 (Dan Bartlett)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: Solar system body or event

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13.7magnitude (faint) Comet 117P/Helin-Roman-Alu Slips By Globular Cluster M69

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13.7magnitude (faint) Comet 117P/Helin-Roman-Alu Slips By Globular Cluster M69

Hard to see?? What's worse is that all of the 77 x 60 second exposures, imaged the comet, at an altitude BELOW 20 degrees! Luckily, the seeing and transparency were fine. Atmospheric refraction played havoc on the color, shape and size of stars. What a busy Sagittarius Starfield!
image Details :
WCS transformation ....... Linear
Projection ............... Gnomonic
Projection origin ........ [1665.482017 1115.998702] px -> [RA: 18 31 22.696 Dec: -32 20 55.05]
Resolution ............... 1.879 arcsec/px
Rotation ................. 88.037 deg
Reference system ......... ICRS
Observation start time ... 2022-07-27 05:02:58 UTC
Focal distance ........... 618.89 mm
Pixel size ............... 5.64 um
Field of view ............ 1d 44' 20.2" x 1d 9' 54.8"
Image center ............. RA: 18 31 22.695 Dec: -32 20 55.02
Image bounds:
top-left .............. RA: 18 34 18.273 Dec: -33 11 44.28
top-right ............. RA: 18 33 57.772 Dec: -31 27 25.08
bottom-left ........... RA: 18 28 44.538 Dec: -33 14 12.86
bottom-right .......... RA: 18 28 30.383 Dec: -31 29 50.84

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	6062113
PixInsight job	ZZM17Z9QB55VOWGS3U9EXW2B6J47Y8NE
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h31m22s.52
RA (top/left)	18h34m18s.31
RA (top/right)	18h33m57s.61
RA (bottom/right)	18h28m30s.37
RA (bottom/left)	18h28m44s.53

Dec (center)	-32°20′57″.5
Dec (top/left)	-33°11′44″.10
Dec (top/right)	-31°27′24″.6
Dec (bottom/right)	-31°29′48″.5
Dec (bottom/left)	-33°14′13″.2

Image Index:

Contribution Index (beta):

13.7magnitude (faint) Comet 117P/Helin-Roman-Alu Slips By Globular Cluster M69

13.7magnitude (faint) Comet 117P/Helin-Roman-Alu Slips By Globular Cluster M69

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Image Index:

Contribution Index (beta):

13.7magnitude (faint) Comet 117P/Helin-Roman-Alu Slips By Globular Cluster M69

13.7magnitude (faint) Comet 117P/Helin-Roman-Alu Slips By Globular Cluster M69

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