M25 Open Cluster in Sagittarius LRGB (Sigga)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: 12.80 · 233 Asterope · B307 · B310 · B311 · IC 4725 · M 25 · NGC 6603 · NGC 6647 · PK012-02.1 · PK013-02.1 · PK013-03.1 · PK013-04.2 · PK014-04.1 · Y Sgr

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M25 Open Cluster in Sagittarius LRGB

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M25 Open Cluster in Sagittarius LRGB

Open Cluster M25 (also known as Messier Object 25 or IC 4725) is an open cluster in the constellation Sagittarius. It was discovered by Philippe Loys de Chéseaux in 1745 and included in Charles Messier's list in 1764.

M25 is at a distance of about 2,000 light-years away from Earth. The spatial dimension of this cluster is about 19 light years across. A Delta Cephei type variable star designated U Sagittarii is a member of this cluster.

--Wikipedia

More:

Messier25 - Wikipedia

Messier25- Astropixels.com

Messier25 - SEDS

This is image #37 in long term project to photograph the complete Messier catalog. For limited acquisition time I am pretty happy with this one, whole Sagittarius region is just amazing.

Four images LRGB 300 seconds each, as usual satellites fly through my subs (if anyone need help ever locating satellites please ask) but I seem to have found method to fix the trails. There is some weird artifact band at bottom left, sorting out how to fix.

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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
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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

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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.

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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	2059722
PixInsight job	EF939IZ1SGVUE7GGP7J8VI0QX9TQPKSF
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	18h26m34s.57
RA (top/left)	18h35m14s.10
RA (top/right)	18h34m17s.28
RA (bottom/right)	18h18m02s.80
RA (bottom/left)	18h18m44s.12

Dec (center)	-18°23′40″.10
Dec (top/left)	-19°31′48″.8
Dec (top/right)	-16°56′36″.10
Dec (bottom/right)	-17°14′05″.1
Dec (bottom/left)	-19°49′30″.6

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M25 Open Cluster in Sagittarius LRGB

M25 Open Cluster in Sagittarius LRGB

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M25 Open Cluster in Sagittarius LRGB

M25 Open Cluster in Sagittarius LRGB

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