Lagoon Nebula (Messier 8) (Leo Pires)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: Lagoon Nebula · M 8 · NGC 6523 · NGC 6526 · NGC 6530 · The star 7 Sgr · The star 9 Sgr

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Lagoon Nebula (Messier 8)

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Lagoon Nebula (Messier 8)

A nebulosa da Lagoa é uma gigantesca nuvem interestelar na constelação de Sagitário. É classificada como uma nebulosa de emissão, cujos gases ionizados, principalmente hidrogênio, emitem radiação principalmente no comprimento de onda na faixa da luz visível vermelha.

Sobreposta à nebulosa existe um pequeno aglomerado aberto de estrelas. Tem magnitude aparente 6,0 e situa-se a 4 850 anos-luz em relação à Terra.
Uma das principais características da da nebulosa Laguna é a presença de nebulosas negras conhecidas como glóbulos de Bok, que são nuvens protoestelares com diâmetros de cerca de 10 000 UA.

A região mais brilhante da nebulosa (conhecida como a nebulosa da Ampulheta) é uma região onde ocorre intensa formação estelar: a intensa emissão luminosa é causada pela excitação de estrelas jovens e quentes, principalmente pela estrela Herschel 36.

Bastante próxima à região brilhante da Nebulosa encontra-se a mais brilhante estrela do objeto, 9 Sagittarii, de magnitude aparente 5,97 e classe espectral O5, que é responsável por grande parte do brilho da nebulosa.

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
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.

Status	Basic success
Started	...
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Lagoon Nebula (Messier 8)

Lagoon Nebula (Messier 8)

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Lagoon Nebula (Messier 8)

Lagoon Nebula (Messier 8)

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