NGC 1838, _9 _6, 1850, _4 and Gas Well Hidden, but Not Well Enough! (Alex Woronow)

Celestial hemisphere: Southern · Constellation: Dorado (Dor) · Contains: NGC 1836 · NGC 1838 · NGC 1839 · NGC 1850 · NGC 1854

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NGC 1838, _9 _6, 1850, _4 and Gas Well Hidden, but Not Well Enough!

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NGC 1838, _9 _6, 1850, _4 and Gas Well Hidden, but Not Well Enough!

NGC 1838, _9 _6, 1850, _4: Well Hidden, but Not Well Enough!

OTA: CDK17” f/6.8
Camera: SBIG STXL11002
Observatory: Heaven's Mirror, Aus

Exposures:
R: 11 x 1200 sec
G: 6 x 1200
B: 6 x 1200
H: 21 x 1800 sec
O: 21 x 1800
Total Exposure time used: 28.7 hours
Image Width: 42 arc-minutes

Processing Tools (some used, some not):
1.   Commercial: PixInsight, Topaz (Studio2, Photo AI2), Aurora HDR, Luminar Neo, 3DLUT Creator, Photo Director 365
2.   Pixinsight Addons: NoiseXTerminator, BlurXTerminator, StarXTerminator, Normalize Scale Gradient
3.   My Scripts: NB_Assistant, AC_Restar, Subframe Weighting Tool (Excel w/ J. Hunt)

Target Description:
Most of the clouds, those roughly donut-shaped ones, are centered on star formation regions. The gasses collapsed into young, hot stars whose stellar winds and intense radiation pushed away the surrounding gasses and stimulated them to radiate in the red (Ha) and blue (OIII).

Processing Description:
Embedded in a dense star field with camouflaging clouds all around, these objects are accessible to image only because AI can remove those stars, denoise the images, and enhance the primary nebulae. The subframes for this image were captured in early 2021 and would have posed a much more difficult processing problem than it does now. Image B (assessable in the right column of this page) shows the problems that the stars presented.

This image is a 'True Color' rendering of the Ha and OIII emission lines with RGB photometrically calibrated stars.

Alex Woronow

Final
Original
B

B

Title: The same fov in R, G, B

Description: Stars, stars, stars...what's a processor to do when all he wants is a little gas?

Uploaded: ...

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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.

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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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Status	Advanced success
Started	...
Astrometry.net job	8466809
PixInsight job	YW3Y5H3VCSTUULZR3UQGXTF26UZK6TX5
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h07m13s.472
RA (top/left)	05h02m39s.789
RA (top/right)	05h09m37s.386
RA (bottom/right)	05h11m45s.225
RA (bottom/left)	05h04m54s.394

Dec (center)	-68°31′54″.48
Dec (top/left)	-68°35′19″.00
Dec (top/right)	-68°53′23″.100
Dec (bottom/right)	-68°28′02″.85
Dec (bottom/left)	-68°10′16″.85

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NGC 1838, _9 _6, 1850, _4 and Gas Well Hidden, but Not Well Enough!

NGC 1838, _9 _6, 1850, _4 and Gas Well Hidden, but Not Well Enough!

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Image Index:

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NGC 1838, _9 _6, 1850, _4 and Gas Well Hidden, but Not Well Enough!

NGC 1838, _9 _6, 1850, _4 and Gas Well Hidden, but Not Well Enough!

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