The Cosmic Key Hole by ShaRA team

The ShaRA team, for the sixth project, landed in a much photographed area of the sky: Orion. Just south of the famous M42, there is a beautiful reflection nebula called NGC1999 The Keyhole.
The cosmic keyhole is a dust-filled nebula with a vast hole of empty space represented by a black patch of sky surrounded by a vast region of ionized hydrogen. It is a reflection nebula and shines with the light of the variable star V380 Orionis. This region is rich in Herbig-Haro objects. HH objects are transient nebulae with very weak emission, visible in star formation zones, formed thanks to ionized gas, expelled in the form of plasma jets from the poles of forming stars, which colliding at supersonic speeds with dense zones of gas and dust excite the atoms, making them luminous due to the triboluminescence effect. In the central part, close to the Hole there are the most luminous HH objects of the Sky: HH1 and HH2. We registered their enlargment respect the images taken in 2014 from HST. More info here:

ShaRA#6 Closed: NGC1999 the Cosmic Key Hole – Astro T-Rex (wordpress.com)

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.

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Astrometry.net job	n/a
PixInsight job	n/a
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