NGC6618 The Swan The Nebula in Narrow Band (Ian Parr)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: Checkmark Nebula · IC 4706 · IC 4707 · Lobster Nebula · M 17 · NGC 6618 · Swan Nebula · omega Nebula

NGC6618 The Swan The Nebula in Narrow Band, Ian Parr

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NGC6618 The Swan The Nebula in Narrow Band

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NGC6618 The Swan The Nebula in Narrow Band

The Swan Nebula, also known as Omega Nebula, is around 6,000 light-years from Earth and spans some 15 light-years in diameter. It is considered one of the brightest and most massive star-forming regions of our galaxy with an estimated 800 solar masses.
The open cluster NGC 6618 lies embedded in the nebulosity and causes the gases of the nebula to shine from these hot, young stars. It is also one of the youngest clusters known, with an age of just 1 million years.

The weather has been rotten lately so I have been revisiting data from earlier this year leveraging new tools and techniques in Pixinsight, assisted greatly by the wonderful new Normalised Scale Gradient tool, Starnet and colour masking, and a new PC with a 24 core AMD Thread Ripper PC, beefy Nvidia GPU and 128 Gb of ram. Life if just too damn short.

Narrow Band processing is a garden of forking paths and Starnet and Photometric Colour calibration in particular helps keep the stars colours moderately sane while goes nuts on the nebulosity. All the latest wonderful technology in Pixinsight still boils down to personal taste in the end. I just wish the sky would allow me more time for acquisition.

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
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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.
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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	5222661
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC6618 The Swan The Nebula in Narrow Band

NGC6618 The Swan The Nebula in Narrow Band

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NGC6618 The Swan The Nebula in Narrow Band

NGC6618 The Swan The Nebula in Narrow Band

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