M34 (Massimo Di Fusco)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: HD16605 · HD16627 · HD16655 · HD16679 · HD16693 · HD16705 · HD16719 · HD16728 · HD16782 · HD16857 · M 34 · NGC 1039

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M34

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M34

Messier 34 (also known as M34 or NGC 1039) is a large open cluster located in the constellation of Perseus. It was probably discovered by Giovanni Batista Hodierna before 1654 and included by Charles Messier in his catalog of comet-like objects in 1764. Messier described it as "A cluster of small stars a little below the parallel of γ (Andromedae). In an ordinary telescope of 3 feet one can distinguish the stars. "
M34 is 1500 light years away from us and includes stars of mass between 0.12 and 1 solar mass. It extends for about 35 'into the firmament, which translates into a real radius of 7.5 light years at the distance at which it is located. The cluster is barely visible to the naked eye in very dark conditions, well away from city lights and can be seen through binoculars when light pollution is low.
The age of this cluster is between that of the Pleiades (100 million years) and that of the Hyades (800 million years). In particular, the comparison between known stellar spectra and predicted values from stellar evolutionary models suggest 200-250 million years.

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Messier catalogue

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	6391538
PixInsight job	LHZDRZSJR9NTTLAQ11LT4XRJQJ5XBQ2B
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h42m07s.90
RA (top/left)	02h38m54s.17
RA (top/right)	02h45m23s.60
RA (bottom/right)	02h45m22s.57
RA (bottom/left)	02h38m47s.63

Dec (center)	+42°45′00″.2
Dec (top/left)	+42°19′06″.4
Dec (top/right)	+42°20′02″.4
Dec (bottom/right)	+43°10′34″.3
Dec (bottom/left)	+43°09′39″.3

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