Hale_Boop (Alberto Tomatis)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: 1 And · 11 Cas) · 17 Cas) · 18 Cas) · 21 Cep · 24 Cas) · 27 Cas) · 37 Cas) · 7 Lac · Andromeda Galaxy · Ksora (δ Cas · M 31 · NGC 224 · NGC 281 · Part of the constellation Cassiopeia (Cas) · Part of the constellation Lacerta (Lac) · Shedir (α Cas · The star Achird (η Cas · The star Caph (β Cas · The star Fulu (ζ Cas · The star Navi (γ Cas · The star Nembus (51 And · The star Ruchbah · The star Shedar · The star α Lac · The star ζ Cep · The star ο And · υ Per)

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Hale_Boop

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Hale_Boop

Cometa Hale-Bopp, C1995 O1, in questa ripresa fotografica si possono vedere il codice a causa, una coda di ioni blu e una coda di polvere bianca. Entrambe le code sono formiato da materiale espulso dal nucleo, Che è principalmente di ghiaccio d'acqua e polvere. Il ghiaccio è riscaldata nell'avvicinamento della cometa al Sole, e si sublima, passando Direttamente da un solido ad un gas, bypassando la forma liquida. Il materiale espulso forma una gigantesca nube intorno al nucleo, che noi vediamo come il Coda. La coda si separa poi in blu gas di ioni, e la coda di polveri.

Alcune delle Molecole in coda di ioni si caricano elettricamente con la luce del sole e sono Chiamate ioni, da qui il nome di coda di ioni. La coda di ioni Viene spazzata via dal sole, dal vento solare e in Alcuni punti della coda di ioni Direttamente dal sole.

La coda di polveri è fatta di granelli di polvere di dimensioni diverse, compresi silicati e Molecole con atomi di carbonio. Illuminata E 'da luce diretta del sole. I grani di polvere Seguono La Cometa Nella sua orbita intorno al sole. Se capita alla Terra di passare Attraverso un flusso Di queste particelle di polvere, si puo manifestare una pioggia di meteoriti.

Un terzo tipo di coda non si vede in questa foto è Stata scoperta da Scienziati, Fatto di gas di sodio neutro, è completamente Diverso da Quello di ioni precedentemente conosciuto e delle code di polveri.

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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
Artificial satellite

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.

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