M17, The Swan Nebula (Ruben Barbosa)

M17, The Swan Nebula

* Image acquisition: Liverpool Telescope

* Processing: Ruben barbosa

Messier 17 is an HII region, composed of gas and dust, which has recently begun to form stars and can be observed in the heart of the Milky Way in the Sagittarius Constellation.

Also known as the Swan Nebula or Omega Nebula (or horseshoe), this object is about 5,500 light years away and the brightest zone (the swan) extends for 15 light-years in diameter (a total 40 light-years away from the interstellar matter cloud).

The color of the Nebula is red with a slight tilt to the rose, which is derived from the hydrogen ionized by the radiation of the young stars that make up the nebula. The inner region is brighter because it also reflects the stellar glow in the dust there. Other darker regions show intense brightness in the infrared band.

This target is popular among amateur astrophotographers as it is recurring to obtain quality images using small aperture telescopes.

Final
Original
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1. Nebulae
Liverpool Telescope Gallery

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.

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