NGC104 (47 Tucanae); Tucanae (Thomas V. Davis)

Celestial hemisphere: Southern · Constellation: Tucana (Tuc) · Contains: 47 Tuc · NGC 104 · NGC 121 · NGC 152 · NGC 176 · tet Tuc

Powered byPixInsight

NGC104 (47 Tucanae); Tucanae

Powered byPixInsight

NGC104 (47 Tucanae); Tucanae

NGC104 (47 Tucanae);Tucanae

Astro Physics 155EDF f/5.3 refractor

KAF-16803; FLI Proline

Total Exposure Time: 3.7 hours; LRGB 42:54:54:72 minutes, unbinned

July 2008; Macedon Ranges Observatory, Victoria, AU

Comments: Discovered by Abbe Nicholas Louis de Lacaille on September 14, 1751. NGC 104, better known as 47 Tucanae, is the second largest and second brightest globular cluster in the skies, outshone only by another southern globular, Omega Centauri (NGC 5139). As its name "47 Tucanae" indicates, this object was first cataloged as a star and numbered the 47th in Tucana. Although a conspicuous naked-eye object, it is situated so much south at its declination of -72 deg, that it was not discovered as a deepsky object before 1751, when Abbe Lacaille cataloged it in his list of southern nebulous objects. Next to observe and catalog it were James Dunlop in 1826, and John Herschel in 1834.The stars of 47 Tucanae are spread over a volume nearly 120 light years across. At their distance of 13,400 light years, they still cover an area of the sky of about the same apparent diameter as the full moon, about 30 minutes of arc. Globular cluster 47 Tucanae is approaching us at roughly 19 km/s (SEDS). NGC104 has a tight core, making it difficult to resolve.

The Small Magellanic Cloud (NGC292) can be seen just entering the field in the top right corner. A small globular cluster NGC121 is seen just "below" NGC104. This globular cluster actually belongs to the Small Magellanic Cloud, while NGC104 belongs to the Milky Way Galaxy. They just happen to line up conveniently.

This image was NASA APOD, August 26, 2008.

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
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	Advanced success
Started	...
Astrometry.net job	2099059
PixInsight job	CW4YKV33XH090BU8WQMP4SFIK053FFYP
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	00h24m10s.29
RA (top/left)	00h05m31s.48
RA (top/right)	00h39m41s.93
RA (bottom/right)	00h40m46s.86
RA (bottom/left)	00h10m42s.98

Dec (center)	-72°04′30″.1
Dec (top/left)	-73°07′46″.4
Dec (top/right)	-73°23′27″.4
Dec (bottom/right)	-70°55′01″.4
Dec (bottom/left)	-70°41′12″.7

Image Index:

Contribution Index (beta):

NGC104 (47 Tucanae); Tucanae

NGC104 (47 Tucanae); Tucanae

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

NGC104 (47 Tucanae); Tucanae

NGC104 (47 Tucanae); Tucanae

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information