Globular Cluster, M 30 (NGC 7099) (Paul Lloyd)

Celestial hemisphere: Southern · Constellation: Capricornus (Cap) · Contains: M 30 · NGC 7099

Globular Cluster, M 30 (NGC 7099), Paul Lloyd

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Globular Cluster, M 30 (NGC 7099)

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Globular Cluster, M 30 (NGC 7099)

M 30 was first discovered by Charles Messier in 1764 and became the 30th entry in his catalogue of
comet-like objects. It can be seen as a hazy patch in good binoculars in the south-east corner of the
constellation, Capricornus. Larger apertures are needed to resolve stars. It lies approx. 27,000 ly away
and has been measured at 93 ly in diameter. Its age has been determined at 12.9 Gy (billion years).

The central core of this cluster is believed to be one of the most concentrated in our galaxy. Also, the
orbital rotation of this cluster around our galaxy's centre is retrograde, i.e. opposite to most other parts
of our galaxy. This has led astronomers to speculate that it was captured from a satelite galaxy, rather
than being generated from within our Milky Way.

Telescope: William Optics FLT110 refractor + 2.0x Barlow, f=1540mm
Camera: ZWO ASI294MC Pro, 34 x 300 sec, no filter
Bortle 3-4 sky, moonless
Field of View: approx. 0º 30’ x 0º 20’
Image processed and prepared in PixInsight and Photoshop Elements

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	Distinct awarded users	Total awarded images
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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
Northern lights
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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
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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.
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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 failed
Started	...
Astrometry.net job	8365954
PixInsight job	QVBMQOMB6G5EQ0V1F1KM7KH49GKBKWPU
PixInsight queue size	n/a
PixInsight stage	PLATE_SOLVING_IMAGE

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Globular Cluster, M 30 (NGC 7099)

Globular Cluster, M 30 (NGC 7099)

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Globular Cluster, M 30 (NGC 7099)

Globular Cluster, M 30 (NGC 7099)

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