NGC 104 (47 Tucanae) (Caldwell 106, Mel 1) (Paul Lloyd)

Celestial hemisphere: Southern · Constellation: Tucana (Tuc) · Contains: 47 Tuc · 47 Tuc Cluster · HD1707 · HD2041 · HD2466 · NGC 104

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NGC 104 (47 Tucanae) (Caldwell 106, Mel 1)

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NGC 104 (47 Tucanae) (Caldwell 106, Mel 1)

NGC 104, or 47 Tuc as it is widely known, is a bright, globular cluster of stars located 15,000 ly away. It is
120 ly in diameter and is visible to the naked eye as a hazy region about the size of the Moon. As it is
only 18º from the South Celestial Pole it was not recorded by Europeans until the 1750s. It is the 2nd
brightest globular cluster in our skies, and contains at least 10,000 very old stars (13 billion years) with
estimates ranging into the millions of stars. It is believed to contain a medium-sized black hole at its core.

It is a glorious sight to us Southern Hemisphere dwellers, whether by eye at a dark site, through binoculars,
or through a modest telescope. It heralds the coming of warmer weather as it ushers in Spring.

I have attempted, here, to retain the colour of the old stars within the cluster.

Telescope: Askar 107PHQ f/7 750mm refractor
Camera: ZWO ASI294MC Pro, gain 125, bin 1x1, no filter
Exposure: 32 x 120 sec; Bortle 3-4 sky, no filter, moonless
Field of View: approx. 1º 14’ x 0º 53’
Image processed and prepared in PixInsight and Photoshop Elements

Original
Final
B

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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
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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
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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 success
Started	...
Astrometry.net job	8885399
PixInsight job	6TXW011BG3VB2XU5IWGV7XA57MAIT6M5
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h24m01s.82
RA (top/left)	00h31m51s.20
RA (top/right)	00h15m57s.41
RA (bottom/right)	00h15m48s.57
RA (bottom/left)	00h32m30s.40

Dec (center)	-72°03′25″.5
Dec (top/left)	-71°35′19″.9
Dec (top/right)	-71°37′02″.7
Dec (bottom/right)	-72°30′14″.1
Dec (bottom/left)	-72°28′32″.4

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NGC 104 (47 Tucanae) (Caldwell 106, Mel 1)

NGC 104 (47 Tucanae) (Caldwell 106, Mel 1)

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NGC 104 (47 Tucanae) (Caldwell 106, Mel 1)

NGC 104 (47 Tucanae) (Caldwell 106, Mel 1)

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