M47 - Open Cluster in Puppis (Bruce Rohrlach)

Celestial hemisphere: Southern · Constellation: Puppis (Pup) · Contains: M 47 · NGC 2422

M47 - Open Cluster in Puppis, Bruce Rohrlach

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M47 - Open Cluster in Puppis

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

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M47 - Open Cluster in Puppis

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

After collecting 12 hours on NGC2020 and company within the LMC (still to be processed), I decided to chase some "instant gratification" with this 9 minute exposure quickie on the open cluster Messier 47 in Puppis.

With about 50 members, it is one of the least densely populated open clusters known. It contains many prominent luminous blue stars, a few older red giants, and two K-type orange giants each about 200 times more luminous than the Sun. The cluster is spread across an area of around 30 arc minutes, about the angular area of the full moon, and formed around 60 million years ago. There is no remnant nebulosity in this cluster, unlike the well known Pleiades cluster.

M47 is located in the constellation Puppis. Puppis used to be part of the much larger constellation Argo Navis, which represented the ship on which Jason and the Argonauts sailed to get the Golden Fleece, before the constellation was divided into several smaller ones: Carina (the keel), Vela (the sails) and Puppis (the stern).

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	Distinct awarded users	Total awarded images
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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
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.

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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	Basic success
Started	...
Astrometry.net job	3528366
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M47 - Open Cluster in Puppis

M47 - Open Cluster in Puppis

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M47 - Open Cluster in Puppis

M47 - Open Cluster in Puppis

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