The Small Magellanic Cloud in Tucana (@HalH75)

Celestial hemisphere: Southern · Constellation: Tucana (Tuc) · Contains: 47 Tuc Cluster · NGC 104 · NGC 292 · NGC 346 · NGC 362 · Small Magellanic Cloud · The star θ Tuc · The star λ Hyi · The star π Tuc

The Small Magellanic Cloud in Tucana, @HalH75

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The Small Magellanic Cloud in Tucana

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The Small Magellanic Cloud in Tucana

Lying within the Milky Way’s outer halo, the Small Magellanic Cloud (SMC) shown here is one of several dwarf galaxies being shepherded by the more massive Large Magellanic Cloud as the composite system makes its first orbital pass of our Galaxy. In the process, a stream of gas has been torn from the SMC that spans more than 200 degrees on the sky, and a tidal bridge containing young stars connects the two clouds. Oriented with north up and east to the left, this 7.1 by 5.7 degree image shows a tilted bar-like structure that has more of its mass in gas than in stars. A faint extension occurs towards the NE (the beginning of the stream) and a broader wing focuses down to several reddish patches toward the east, which is the start of the bridge. With a gradient in velocity along the bar (velocities decrease away from the top of the image) and no evidence that the cloud is rotating, the SMC may actually comprise several distinct sub-structures that overlap along the line of sight rather than being a single entity. Two foreground Globular Clusters can also be seen: NGC 362 (upper center) and 47 Tuc (NGC 104-right). This narrowband (H-alpha and OIII)-enhanced LRGB image was made from unguided and unbinned (6.3 arcsec/px) data acquired by Chilescope’s Telescope 4 equipped with an FLI Microline 16200 camera. Fitted with a Nikkor 200:2 lens (100 mm aperture, f/2) and Astrodon color filters, the camera took 70 separate 180-sec exposures that were stacked for 90-mins in H-alpha and 30-mins in OIII, R, G, and B. Subsequently, the band means were processed by Photoshop CC 2019 into a detail-enhanced RGB image that was used to color a synthetic luminance frame.

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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	7336082
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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The Small Magellanic Cloud in Tucana

The Small Magellanic Cloud in Tucana

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The Small Magellanic Cloud in Tucana

The Small Magellanic Cloud in Tucana

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