NGC 672 (Alberto Tomatis)

NGC 672

Link: https://alto-observatory.smugmug.com

NGC 672

Link: https://alto-observatory.smugmug.com

NGC 7538 è una nebulosa a emissione piccola ma appariscente, visibile nella costellazione di Cefeo;

si trova sul Braccio di Perseo ed è direttamente connessa con la grande associazione OB Cassiopeia OB2.

Al suo interno sono presenti fenomeni di formazione stellare a diversi stadi, da quelli più avanzati,

disposti principalmente nel settore nordoccidentale della nube, fino a quelli più recenti, situati a sudest;

ciò suggerisce che la formazione stellare è proceduta a ondate a partire dalle regioni nordoccidentali.

NGC 7538 si trova immersa, assieme alla vicina Sh2-159, nella tenue nebulosità diffusa della nube gigante catalogata

come Sh2-261B, che fa parte della nube Sh2-261, il cui centro si trova in direzione nordest; la nebulosa è associata

alla grande associazione OB Cas OB2, che conta cinque stelle massicce di classe O e alcune di classe B.

La nebulosa si trova nella parte più occidentale della costellazione, vicino al confine con Cassiopea;

la regione in cui si trova può essere individuata poco a nord del centro della linea congiungente

le stelle Caph (β Cassiopeiae) e ζ Persei, rispettivamente di magnitudine 2,27 e 3,39, circa 1° ad

ovest dell'ammasso aperto M52. Può essere osservata anche otticamente con un telescopio

di potenza medio-alta e diventa ben visibile nelle fotografie a lunga posa, in cui si mostra come

una nebulosità dalla forma ovoidale leggermente allungata in senso est-ovest. Lo sfondo è molto

ricco di campi stellari e di nebulose.

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	Basic pending
Started	...
Astrometry.net job	3953204
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

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NGC 672

NGC 672

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Image Index:

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NGC 672

NGC 672

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