IC 1396_Elephant’s Trunk Nebula (Alberto Tomatis)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: IC 1396

IC 1396_Elephant’s Trunk Nebula, Alberto Tomatis

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IC 1396_Elephant’s Trunk Nebula

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IC 1396_Elephant’s Trunk Nebula

La Elephant’s Trunk Nebula è una regione densa di polvere e gas che si trova all'interno della regione di formazione stellare IC 1396, notevolmente più grande, nella costellazione del Cefeo. Designato IC 1396A, il globulo allungato di polvere e gas è stato chiamato Elephant's Trunk perché assomiglia alla testa e alla proboscide di un elefante a lunghezze d'onda visibili, apparendo come una macchia scura con un bordo luminoso e sinuoso. Si trova a una distanza di 2.400 anni luce dalla Terra.

   La Nebula è una regione di formazione stellare, con più di 250 giovani stelle identificate all'interno e intorno ad essa.
   Molte di queste stelle sono molto giovani, hanno meno di 100.000 anni.

   Ci sono due stelle con un'età stimata di un paio di milioni di anni, trovate in una piccola cavità nella testa del tronco dell'elefante. Le protostelle appena nate si sono formate a causa della pressione creata dall'elevata compressione causata dalla radiazione della massiccia stella centrale e dai venti delle giovani stelle all'interno della nebulosa.
   Le radiazioni e i venti stellari della stella centrale stanno erodendo parte della polvere e del gas della nebulosa, comprimendo anche parte del materiale in grumi da cui si formano nuove stelle.

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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	5072511
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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IC 1396_Elephant’s Trunk Nebula

IC 1396_Elephant’s Trunk Nebula

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IC 1396_Elephant’s Trunk Nebula

IC 1396_Elephant’s Trunk Nebula

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