IC 1396: Elephant's Trunk Nebula (ivnlpz)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: 13 Cep · B160 · B161 · B162 · B163 · B365 · B367 · Erakis · IC 1396 · LBN 451 · LBN 452 · LBN 455 · LBN 456 · LBN 457 · LDN · LDN 1085 · LDN 1086 · LDN 1087 · LDN 1088 · LDN 1090 · LDN 1092 · LDN 1093 · LDN 1095 · LDN 1096 · LDN 1098 · LDN 1099 · LDN 1101 · LDN 1102 · LDN 1103 · LDN 1104 · And 28 more.

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IC 1396: Elephant's Trunk Nebula

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IC 1396: Elephant's Trunk Nebula

The stunning emission nebula IC 1396 mixes glowing cosmic gas and dark dust clouds in the high and far off constellation of Cepheus. Energized by the bright central star, this star forming region sprawls across hundreds of light-years, spanning over three degrees on the sky while nearly 3,000 light-years from planet Earth. Among the intriguing dark shapes within IC 1396, the winding Elephant's Trunk nebula lies just off center.

Preprocessing in PI:
- WBPP for calibration and cosmetization
- StarAlignment
- SubframeSelector to find best image by PSF signal
- NormalizeScaleGradient
- ImageIntegration

Processing in PI:
- DynamicCrop
- DBE
- PixelMath to split into Ha and Oiii layers
- EZ decon and denoise
- LinearFit Oiii using Ha as reference
- EZ soft stretch
- Reduce halo strength with PixelMath, Convolution and HistogramTransformation
- PixelMath to combine into HOO image
- LRGBCombination using Ha as luminance
- SCNR
- TGVDenoise
- ACDNR
- CurvesTransformation
- MLT to slightly sharpen image
- LocalHistogramEqualization with RangeSelection masks
- EZ star reducuction
- final CurvesTransformation

/r/astrophotography
The refractors!
N.I.N.A. Users
Texas Astronomy
WO Redcat 51 Group
Narrowband imaging
Suburban Astrophotography
PixInsight Addicts
IOptron CEM

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
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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	5416915
PixInsight job	GCAVDAHW37LGLA9B70E0WMV7N26P20MR
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h40m37s.36
RA (top/left)	21h58m00s.74
RA (top/right)	21h25m24s.70
RA (bottom/right)	21h24m20s.76
RA (bottom/left)	21h54m29s.78

Dec (center)	+57°29′15″.5
Dec (top/left)	+58°37′16″.10
Dec (top/right)	+59°05′37″.7
Dec (bottom/right)	+56°12′50″.4
Dec (bottom/left)	+55°46′36″.3

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IC 1396: Elephant's Trunk Nebula

IC 1396: Elephant's Trunk Nebula

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IC 1396: Elephant's Trunk Nebula

IC 1396: Elephant's Trunk Nebula

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