NGC 2736 (Alberto Tomatis)

Celestial hemisphere: Southern · Constellation: Vela (Vel)

NGC 2736

NGC 2736, nota anche come Nebulosa Matita o con la sigla RCW 37, è un resto di supernova visibile nella costellazione della Vela;

venne scoperta da John Herschel nel 1835 dal Capo di Buona Speranza.

Si osserva nella parte orientale della costellazione, circa 5° a SSW della stella ? Velorum; la sua tenue nebulosità si confonde con quella del bordo

sud orientale della Nebulosa di Gum e i delicati filamenti della Nebulosa della Vela.

La sua declinazione moderatamente australe comporta che dalle regioni boreali la sua osservazione è molto difficoltosa,

mentre a nord dei 44°N è sempre invisibile. Dall'emisfero australe invece è osservabile per buona parte delle notti dell'anno.

Il periodo migliore per la sua osservazione nel

cielo serale è compreso fra i mesi di dicembre e maggio.

Trovandosi alla distanza di circa 250 parsec (815 anni luce), ricade nello stesso ambiente galattico della celebre Nebulosa della Vela,

di cui probabilmente costituisce la parte più orientale;

si tratta di una struttura filamentosa e molto tenue, che si muove nello spazio da ovest a est alla velocità di circa 644.000 km/h.

La La grande velocità di espansione ha suggerito una

correlazione con un'altra esplosione di supernova più recente, il cui resto è noto come RX J0852.0-4622, avvenuta all'interno del ben noto

resto di supernova che costituisce la Nebulosa della Vela;

una parte del materiale espulso da questa seconda esplosione ha raggiunto il bordo esterno della bolla in espansione generata dalla

precedente esplosione, generando la formazione nebulosa osservabile.

Alberto Tomatis

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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	405358
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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