Messier 16: The Inside Story – From Ha (Alex Woronow)

Celestial hemisphere: Southern · Constellation: Serpens (Ser) · Contains: Eagle Nebula · IC 4703 · LBN 67 · M 16 · NGC 6611 · Sh2-49 · Star Queen · Star Queen nebula

Messier 16: The Inside Story – From Ha

Messier 16: The Inside Story – From Ha

OTA: CDK24” f/6.5
Camera: Moravian C3-61000 Pro, 2x2 binned at capture
Observatory: Heaven's Mirror, Chile

Exposures:
Ha 9 x 300"
Total Exposure time used: 45 minutes
Image Width: 21.2 arcminutes

Processing: PixInsight, Topaz Studio2, Luminar Neo, custom scripts for image weighting. 2x downsampled for presentation.

A partial data set of only 45' of exposure drove my curiosity about the detail that could be revealed. As we know by now, our eyes and brain perceive the most significant detail in grayscale images. H-alpha is usually the carrier of that detail in emission nebulae. No surprise, Ha originates from energetic regions where turbulence, shock, temperature, and winds separate hydrogen protons from electrons, and when they reunite, Lyman, Balmer, Paschen, Bracket, and other wavelengths of emissions occur. Ha is a member of the Balmer Series, where a free electron, previously energized in a hydrogen atom, falls from the n=3 orbital into the n=2 orbital.

Wikipedia

In a real way, Ha is showing us where the action is!

Alex Woronow

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.

Status	Advanced success
Started	...
Astrometry.net job	8380143
PixInsight job	X8ZUTUMS41OV3XBPN6FSG3A1RNFUHUW0
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h19m00s.423
RA (top/left)	18h18m16s.707
RA (top/right)	18h19m44s.970
RA (bottom/right)	18h19m44s.530
RA (bottom/left)	18h18m16s.910

Dec (center)	-13°50′25″.52
Dec (top/left)	-14°00′42″.98
Dec (top/right)	-14°00′43″.27
Dec (bottom/right)	-13°40′09″.20
Dec (bottom/left)	-13°40′08″.31

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Messier 16: The Inside Story – From Ha

Messier 16: The Inside Story – From Ha

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Image Index:

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Messier 16: The Inside Story – From Ha

Messier 16: The Inside Story – From Ha

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