Omega Centauri. NGC 5139 (glend)

Celestial hemisphere: Southern · Constellation: Centaurus (Cen) · Contains: NGC 5139 · omega Cen

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Omega Centauri. NGC 5139

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Omega Centauri. NGC 5139

Omega Centauri, NGC 5139, is a globular cluster in the constellation of Centaurus. Located at a distance of 15,800 light-years (4,850 pc), it is the largest globular cluster in the Milky Way at a diameter of roughly 150 light-years. It is estimated to contain approximately 10 million stars and a total mass equivalent to 4 million solar masses.

Omega Centauri is so distinctive from the other galactic globular clusters that it is thought to have an alternate origin as the core remnant of a disrupted dwarf galaxy.

Captured here with an ASI1600MM-C camera, running at -25C. Image built of solely RGB channels, comprised of 45 x 30s subs for each channel. I also shot high gain Ha which I considered using in this image but it was tending to overpower the subtle colours of the RCG layers, even if I dialed back the opacity. I may revist this when I work out how to incorporate the Ha. Surprisingly there was alot of Ha in this object.

Scope was a TS Photoline 115mm APO reduced to f5 (from f7), mount was the CGX

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	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
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Star trails
Northern lights
Noctilucent clouds
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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	Basic success
Started	...
Astrometry.net job	1589772
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Omega Centauri. NGC 5139

Omega Centauri. NGC 5139

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Omega Centauri. NGC 5139

Omega Centauri. NGC 5139

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