NGC 6440 (Jim Fordice)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: HD161716 · NGC 6440

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NGC 6440

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NGC 6440

I have observed NGC 6440 three times:

* 18 June 2015 at the Black Canyon of the Gunnison in Colorado using a 12” Skywatcher Dobsonian: Very dim patch. Overall dim but it brightens towards the core. Appears to have a large halo.

* 26 September 2016 at the Okie-Tex Star Party using a 12” Skywatcher Dobsonian: I This globular cluster is a dim patch that brightens slightly towards the center.

* 1 October 2024 at the Okie-Tex Star Party using a 22” Doc Telescope Dobsonian: NGC 6440 is a bright patch that brightens slightly towards the center. No stars resolved and no discernible colors.

I obtained the calibrated lights frames used to create the final image from Telescope Live. The frames were imaged by the CHI-1-CMOS Telescope at the El Sauce Observatory in Chile.
Shapley Sawyer Classification: V
Distance: 27,727 LY
Type: Hub Globular
Position w.r.t. core of galaxy: In the Milky Way hub just above and the one side of the core.
Any stars resolved: No
Undergoing Core Collapse: No

Created with SkySafari 6 Pro.

Rarely Imaged Small DSOs
Objects of the South - negative declination only
Globular Star Clusters

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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	...
PixInsight job	HFL2OS0LBI3P99M0D6IT6C4ZR1MUX939
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	17h48m52s.478
RA (top/left)	17h49m54s.900
RA (top/right)	17h47m43s.473
RA (bottom/right)	17h47m49s.873
RA (bottom/left)	17h50m01s.553

Dec (center)	-20°21′28″.24
Dec (top/left)	-20°10′03″.92
Dec (top/right)	-20°12′24″.52
Dec (bottom/right)	-20°32′51″.80
Dec (bottom/left)	-20°30′32″.47

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