Open Cluster NGC 3532 in Carina (Paulo Cacella)

Celestial hemisphere: Southern · Constellation: Carina (Car) · Contains: NGC 3532 · x Car

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Open Cluster NGC 3532 in Carina

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Open Cluster NGC 3532 in Carina

NGC 3532 (Caldwell 91),[8] also commonly known as the Pincushion Cluster,[9][10][11][8] Football Cluster,[12][13] and the Wishing Well Cluster,[4][5][6][7] is an open cluster some 405 parsecs from Earth[2] in the constellation Carina. Its population of approximately 150 stars of 7th magnitude or fainter includes seven red giants[14] and seven white dwarfs.[15][16] On 20 May 1990 it became the first target ever observed by the Hubble Space Telescope. A line from Beta Crucis through Delta Crucis passes somewhat to the north of NGC 3532. The cluster lies between the constellation Crux and the larger but fainter "False Cross" asterism. The 4th-magnitude Cepheid variable star x Carinae (V382 Car) appears near the southeast fringes, but it lies between the Sun and the cluster and is not a member of the cluster.

The cluster was first catalogued by Nicolas Louis de Lacaille in 1751. It was admired by John Herschel, who thought it one of the finest star clusters in the sky,[3][17] with many double stars (binary stars).

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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
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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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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.
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	2503371
PixInsight job	0OX8RVZ9KO6ZHI0ANW7NM7MFFQ844541
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	11h05m48s.74
RA (top/left)	11h00m39s.22
RA (top/right)	11h01m25s.91
RA (bottom/right)	11h10m44s.61
RA (bottom/left)	11h10m25s.54

Dec (center)	-58°39′58″.9
Dec (top/left)	-59°27′07″.4
Dec (top/right)	-57°48′53″.1
Dec (bottom/right)	-57°52′08″.6
Dec (bottom/left)	-59°30′35″.2

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Open Cluster NGC 3532 in Carina

Open Cluster NGC 3532 in Carina

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Open Cluster NGC 3532 in Carina

Open Cluster NGC 3532 in Carina

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