IC 4685 – A place of Turmoil (Alex Woronow)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: IC 1274 · IC 4684 · IC 4685 · NGC 6559 · The star 11Sgr

IC 4685 – A place of Turmoil, Alex Woronow

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IC 4685 – A place of Turmoil

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IC 4685 – A place of Turmoil

IC 4685 – A place of Turmoil
OTA:……………….TAO 150 (f/7.3)
Camera:………….FLI - ML16200 (1.13 arcsec/pixel)
Observatory:….Deep Sky West, Chile

EXPOSURES:

EXPOSURES:
…R….…16 x 600 sec.
…B…....15 x 600
…G…….25 x 600
…L……..22 x 600
…H.……12 x 1800
Total exposure:    29 hours

Image Width: 1.3 deg
Processed by Alex Woronow (2021) using PixInsight, Topaz, 3DLut, SWT

This image covers a region hosting nebula that is a mixture of reflection and emission nebulae and a couple of thin dark nebulae in the foreground as well extensive dark nebulae around the bright central one. This image combined the Ha image, or, more correctly the estimated Ha emission-line image (separated from the continuum) with an RGB image. The luminosity component is a modified “Super-L” image (RGB+L intensities), augmented by the extracted Ha emission line. Much of the detail comes from this constructed L component.

Hope you find the image interesting…
Alex

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	Distinct awarded users	Total awarded images
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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
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Star trails
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Distribution of data sources

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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
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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.

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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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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	Advanced failed
Started	...
Astrometry.net job	5444951
PixInsight job	Y1E050ADT46Y4JQPMN84B3E6EHYQVQ4Y
PixInsight queue size	n/a
PixInsight stage	PLATE_SOLVING_IMAGE

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IC 4685 – A place of Turmoil

IC 4685 – A place of Turmoil

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IC 4685 – A place of Turmoil

IC 4685 – A place of Turmoil

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