M16: Emission Lines (SHO) Separated from the Continuum (Alex Woronow)

Celestial hemisphere: Southern · Constellation: Serpens (Ser) · Contains: Eagle Nebula · IC 4703 · LBN 67 · LBN 68 · M 16 · NGC 6611 · Sh2-49 · Star Queen · Star Queen nebula

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M16: Emission Lines (SHO) Separated from the Continuum

Powered byPixInsight

M16: Emission Lines (SHO) Separated from the Continuum

M16: Emission Lines (SHO) Separated from the Continuum

OTA: 10” home-made Newtonian, f/5.3
Camera: ASI 1600MM
Observatory: BlackRig

Exposures:
R: 13 x 600 sec
G: 18 x 600
B: 15 x 600
H: 11 x 600 sec
O: 15 x 600
S: 10 x 600
Total Exposure time used: 13.7 hours
Image Width: 45 arc minutes

Processing: PixInsight, Topaz Studio2 Luminar Neo, Aurora HDR, custom scripts for image weighting and star replacement

A big thanks to the altruism of BlackRig for providing these data absolutely free!

The image presented here has had the actual emission line radiation (i.e., photon contribution) separated from the spectral continuum. The continuum adds photons at all wavelengths, diminishing the contrast at feature boundaries and "blur" the color spatial locations across the image. Isolating the locations of the emission lines increases the delineation of features. At the same time, reflection nebulae are suppressed… c'est la guerre!
(However, in this case, I did not have information about the narrow band filters' bandwidth, so some reflection nebulae probably crept through.)

Compute with power!

Alex Woronow

Please note: The following tables are updated every 24 hours.

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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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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	8085744
PixInsight job	7QD7ARZSAP83LV36WKLBSNPZLOALMN9G
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h18m51s.735
RA (top/left)	18h16m57s.288
RA (top/right)	18h19m25s.653
RA (bottom/right)	18h20m46s.221
RA (bottom/left)	18h18m17s.871

Dec (center)	-13°47′19″.48
Dec (top/left)	-13°47′21″.97
Dec (top/right)	-14°13′52″.21
Dec (bottom/right)	-13°47′17″.24
Dec (bottom/left)	-13°20′48″.70

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M16: Emission Lines (SHO) Separated from the Continuum

M16: Emission Lines (SHO) Separated from the Continuum

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M16: Emission Lines (SHO) Separated from the Continuum

M16: Emission Lines (SHO) Separated from the Continuum

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