Crux and the Coalsack (TWFowler)

Celestial hemisphere: Southern · Constellation: Crux (Cru) · Contains: Centaurus · Crux · Jewel Box · Mimosa (βCru) · NGC 4103 · NGC 4337 · NGC 4349 · NGC 4439 · NGC 4463 · NGC 4609 · NGC 4755 · NGC 4815 · NGC 4852 · NGC 5120 · NGC 5138 · NGC 5168 · The constellation Crux (Cru) · The star Becrux · The star Gacrux (γCru) · The star α1Cru · The star α2Cru · The star δCru · The star εCru · The star ζCru · The star ηCru · The star ιCru · The star μ1Cru

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Crux and the Coalsack

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Crux and the Coalsack

The Southern Cross and nearby Coalsack are iconic Southern Hemisphere objects. Being circum polar from most of Australia, they are always visible in a clear sky. The Coalsack is the largest dark nebula in our skies, and yet only appears in the Caldwell catalog, as C99.

This 2 panel mosaic was shot after the moon set from the Astronomical Society of Victoria's dark sky site about 2 hours from Melbourne.

Data were calibrated and stacked in Sequator, photomerged in Photoshop, and tweeked in Adobe Camera Raw.

Astronomical Society of Victoria (ASV)

Please note: The following tables are updated every 24 hours.

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
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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	Advanced success
Started	...
Astrometry.net job	5495707
PixInsight job	DNFB4PYDBBLBOQODJ6TNMWQXG31CFJM9
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h49m18s.35
RA (top/left)	13h24m27s.70
RA (top/right)	12h11m10s.91
RA (bottom/right)	12h00m56s.43
RA (bottom/left)	13h39m22s.50

Dec (center)	-61°00′37″.8
Dec (top/left)	-55°47′52″.0
Dec (top/right)	-56°01′13″.1
Dec (bottom/right)	-65°30′05″.6
Dec (bottom/left)	-65°04′21″.3

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Crux and the Coalsack

Crux and the Coalsack

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Image Index:

Contribution Index (beta):

Crux and the Coalsack

Crux and the Coalsack

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Description

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