Il delfino (Bruno@Latorre1966)

Il delfino

Sh2-308 (Nebulosa Delfino)-Sh2-308 è la grande bolla che circonda la stella di Wolf-Rayet WR 6, nota anche come EZ Canis Majoris, di sesta magnitudine; questa nube si è originata circa 70.000 anni fa a causa delle espulsioni di materia perse dalla stella, che per via del suo forte vento stellare si è disposta tutt'attorno ad essa a formare una struttura a bolla. L'estensione della nube è di circa 6 parsec (19 anni luce) e la sua distanza è stimata attorno ai 575 parsec (1875 anni luce); secondo altri studi invece, la distanza della stella e delle nubi ad essa associate sarebbe di 1800 parsec (5870 anni luce). Secondo gli studi che indicano le stime di distanza più basse, EZ CMa appartiene ad un'associazione OB molto estesa e poco concentrata, visibile nella stessa direzione dell'ammasso aperto Cr 121 e probabilmente legata a M41, associazione nota come Canis Major OB2; questa struttura è situata a circa 200 parsec dal Complesso di Orione e a breve distanza dai bordi esterni della Nebulosa di Gum.Ripresa di Marzo-Aprile 2022(mai elaborata). 40 x 600 (filtro L-eXtreme) Celestron C9,25 - f 6,3 - montatura CGX - Camera ZWOASI 2600 MC PRO - gain 100, temperatura -10°, Camera guida ZWO ASI 120 mini MM su telescopio guida 70/400 - ZWO ASIAIR PRO - ZWO EAF focuser - elaborazione PixInsight ,Photoshop, Camera Raw.🙂

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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.

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PixInsight job	n/a
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