Le Galassie di M81 (GIANNI MELIS)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's Galaxy · Cigar Galaxy · HD85161 · HD85533 · HD85828 · HD86574 · M 81 · M 82 · NGC 3031 · NGC 3034

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Le Galassie di M81

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Le Galassie di M81

Nella Costellazione dell'Orsa Maggiore, nei periodi che vanno da Gennaio ad Agosto, possiamo osservare il gruppo di galassie denominato "Le Galassie di M81" , che conta 34 galassie delle quali sono le principali M81 conosciuta come la galassia di Bode ed M82 conosciuta come la galassia Sigaro.
Le due galassie, all'apparenza vicine , distano fra loro 300.000 anni luce , mentre distano dalla nostra stella Sole 11.7 milioni di anni luce.
Milioni di anni fa ci fu un incontro tra le due galassie e una grande quantità di gas si è riversata sulle regioni centrali di M82.. Questa interazione diede vita ad un forte aumento della formazione stellare in entrambe le galassie. L'interazione di M81 su M82 da origine a fenomeni di formazione stellare causando la formazione di superammassi . La Galassia M82 ha la particolarità di emettere un potente campo magnetico ed è una sorgente di intense onde radio

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	7367892
PixInsight job	AR2U2QEOEZ3T6JB1PHA4GZNXQP81HO52
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	09h55m35s.40
RA (top/left)	10h00m17s.87
RA (top/right)	10h06m14s.31
RA (bottom/right)	09h50m18s.79
RA (bottom/left)	09h45m46s.20

Dec (center)	+69°17′24″.5
Dec (top/left)	+68°05′29″.3
Dec (top/right)	+70°10′02″.1
Dec (bottom/right)	+70°28′48″.10
Dec (bottom/left)	+68°22′33″.1

Image Index:

Contribution Index (beta):

Le Galassie di M81

Le Galassie di M81

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Image Index:

Contribution Index (beta):

Le Galassie di M81

Le Galassie di M81

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