Elephant Trunk - SHO (Aaron Freimark)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: LBN 451 · LBN 452 · LDN 1092 · LDN 1093 · LDN 1096 · LDN 1098 · LDN 1099 · LDN 1102 · LDN 1105 · VdB142

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Elephant Trunk - SHO

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Elephant Trunk - SHO

IC 1396, known as the "Elephant Trunk" nebula. It's a cloud of dark gas (that looks like an elephant's trunk) in front of another cloud of starlight gas. This is thought to be the birthplace of several young — less than 100,000 years — new stars.

I shot this January 3 & 4, and just got around to processing it. Where I live, we won't see this nebula again until the Summer.

Processing
1. WeightedBatchProcessing to calibrate, register, and integrate
2. Drizzle Integration
3. Dynamic Crop
4. EZ Denoise
5. StarXTerminator on the linear image

Starless
1. Arcsinhstretch
2. CloneStamp to clean up SII artifacts (StarXTerminator did really well on Ha and OIII)
3. PixelMath to combine a narrowband mix: traditional SHO
4. SCNR
5. Invert & SCNR again to remove Magenta cast
6. Apply Ha as L using LRGBCombination
7. CurvesTransformation
8. Topaz Denoise AI

Stars
1. LinearFit Ha and SII to OIII
2. ChannelCombination
3. SCNR
4. HistogramTransformation

Combination
1. PixelMath: 1-((1-SHO)*(1-stars))

Mid-Hudson Astronomical Association (MHAA)

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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.	...
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Status	Advanced success
Started	...
Astrometry.net job	5499046
PixInsight job	4P4HQTVM0TPJMMM35X7QX1YPJRG2O5YI
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h34m17s.477
RA (top/left)	21h38m50s.410
RA (top/right)	21h36m39s.242
RA (bottom/right)	21h29m37s.298
RA (bottom/left)	21h32m01s.263

Dec (center)	+57°30′05″.80
Dec (top/left)	+56°59′39″.81
Dec (top/right)	+58°14′01″.92
Dec (bottom/right)	+57°59′55″.50
Dec (bottom/left)	+56°46′00″.37

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Elephant Trunk - SHO

Elephant Trunk - SHO

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Image Index:

Contribution Index (beta):

Elephant Trunk - SHO

Elephant Trunk - SHO

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

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