Omega Centauri NGC5139 (Alastairmk)

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

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Omega Centauri NGC5139

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Omega Centauri NGC5139

NGC5139, Omega Centauri, is visible only in the Southern skies and is arguably the most outstanding globular cluster observable from Earth. This picture was imaged from my balcony in Queenstown, New Zealand and is a stack of 174 images:

L 82 30s, plus 30 5s to prevent the centre being overexposed and to allow for the constrained dynamic range of the 12 bit camera chip.

R 22 60s, G 20 60s & B 20 60s for a total integration time of 105 minutes.

Luminance subs with different exposures combined with Pixinsight's High Dynamic Range Composition process after ABE and DBE to remove gradients.

Processing in Pixinsight: ABE, DBE, Deconvolution, Mure Denoise, and BN and Photometric Colour Calibration after RGB Combination while linear. Stretching with AutoHistogram, followed by a light deconvolution and TGV Denoise. Final tweaks using Mac OS 10.14 Photos editor.

NOVAC

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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
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	Basic success
Started	...
Astrometry.net job	2538396
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Omega Centauri NGC5139

Omega Centauri NGC5139

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Image Index:

Contribution Index (beta):

Omega Centauri NGC5139

Omega Centauri NGC5139

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