NGC 6357 The Lobster (War and Peace) Nebula in Scorpius in Narrow Band (Ian Parr)

Celestial hemisphere: Southern · Constellation: Scorpius (Sco) · Contains: NGC 6357 · the War and Peace Nebula

NGC 6357 The Lobster (War and Peace) Nebula in Scorpius in Narrow Band, Ian Parr

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NGC 6357 The Lobster (War and Peace) Nebula in Scorpius in Narrow Band

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NGC 6357 The Lobster (War and Peace) Nebula in Scorpius in Narrow Band

NGC 6357, the Lobster Nebula and also kown as the War and Peace Nebula is a diffuse HII region in the constellation of Scorpius.
It is located about 3,622 light years away from Earth and this field is about 50 arcminutes across. It is one of the most prominent sites of massive-star formation in our neighborhood of the Milky
Way. The nebula contains many proto-stars shielded by dark discs of gas, and a variety of early O-type stars blows the visible bubbles around the star clusters in the molecular cloud.
I cleaned up some data from last may and gave it another go with the new suite of 'game changing' tools in Pixinsight, while I wait for the sky to clear.

Revised 18 April 2023: I tried processing each filter to starless seperately: GraXPert background extraction first , then BlurXTerminator second, NoiseXTerminator third and then StarXTerminator generating Starless on each filter before combining. That seems to work nicely! I particularly like the mini Pillar of Creation in the blue core.

It is going to be bang on the Zenith for me in June so this will be getting a lot more attention weather permitting.

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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	7559008
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC 6357 The Lobster (War and Peace) Nebula in Scorpius in Narrow Band

NGC 6357 The Lobster (War and Peace) Nebula in Scorpius in Narrow Band

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Contribution Index (beta):

NGC 6357 The Lobster (War and Peace) Nebula in Scorpius in Narrow Band

NGC 6357 The Lobster (War and Peace) Nebula in Scorpius in Narrow Band

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