NGC 281 (Alberto Tomatis)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1590 · NGC 281

NGC 281

Link: https://alto-observatory.smugmug.com

NGC 281

Link: https://alto-observatory.smugmug.com

GC 281 anche conosciuta come la Nebulosa Pacman (per

la sua somiglianza con il personaggio dei videogiochi),

è una nebulosa a emissione visibile nella costellazione di Cassiopea;

circonda l'ammasso aperto IC 1590.

Occorrono strumenti potenti per poter individuare la nebulosa,

che sicuramente è l'oggetto più importante, dato che

l'ammasso ad essa associato è formato da pochi astri e

dominato da una stella doppia di ottava magnitudine.

La nebulosa appare solcata nettamente da una vena scura, che la attraversa in senso est-ovest;

perpendicolare a questa se ne individua un'altra, rivolta verso sud:

viene così a formarsi una "T" che segna profondamente tutto l'oggetto.

NGC 281, IC 11 o Sh2-184 è una nebulosa a emissione luminosa e parte di una

regione H II nella costellazione settentrionale di Cassiopea e fa parte del

braccio a spirale Perseus della Via Lattea. Questa nebulosità × 20,30

dimensioni arcmin è anche associata con cluster aperto IC 1590, diversi

globuli Bok. Si estende su un'area più ampia di 40 arcmin.

La stima della sua distanza è che si trovi a 2,82±0,20 kpc. (9200 ly.) da noi.

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 failed
Started	...
Astrometry.net job	3965022
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

NGC 281

NGC 281

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Image Index:

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NGC 281

NGC 281

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