Sh2 134 (Alberto Tomatis)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: The star 14 Cep

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Sh2 134

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Sh2 134

Si individua nella parte meridionale della costellazione ed è più o meno centrata attorno alla stella ? Cephei; il periodo più indicato per la sua osservazione nel cielo serale ricade

fra i mesi di luglio e dicembre ed è notevolmente facilitata per osservatori posti nelle regioni dell'emisfero boreale terrestre, dove si presenta circumpolare fino alle regioni temperate calde.

Sh2-134 è un esteso sistema di nebulose legate all'associazione Cepheus OB2; la sua distanza è pari a 900 parsec (oltre 2900 anni luce)[2] e riceve la radiazione ionizzante della stella ? Cephei,

situata negli immediati dintorni. Si ritiene che questa nebulosa, così come le vicine Sh2-131 e Sh2-133, siano associate alla grande superbolla in espansione nota come Cepheus Bubble.

La componente non ionizzata del sistema nebuloso di Sh2-134 comprende alcune nubi molecolari visibili alla lunghezza d'onda del CO, fra le quali spiccano [DBY94] 153 e [DBY94] 156,

rispettivamente con una massa pari a 510 e 450 masse solari. Fenomeni di formazione stellare nella regione sono testimoniati dalla presenza di alcune sorgenti di radiazione infrarossa,

gran parte delle quali identificate dall'IRAS, e di un maser con emissioni H2O.

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 success
Started	...
Astrometry.net job	6424815
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Sh2 134

Sh2 134

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Sh2 134

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