IC 1396 : The Elephants Trunk Nebula SHO (Morgan Somers)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: B161 · B163 · B365 · B367 · IC 1396 · Sh2-131 · VdB142

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IC 1396 : The Elephants Trunk Nebula SHO

Powered byPixInsight

IC 1396 : The Elephants Trunk Nebula SHO

Gain 139

Cooled -20c

50~ Darks

33~ Flats ea. SHO

33~FlatDarks ea. SHO

180x60" S

360x60" H

180x60" O

I followed these instructions I found from a fellow AstroBinner

Preprocessing:

Batch PreProcessing script to generate calibrated images

StarAlignment

LocalNormalization

ImageIntegration

DrizzleIntegration

DynamicCrop

DBE

Luminance Processing:

Duplicated the master Ha to use as the luminance

Deconvolution

ArcsinhStretch and HistogramTransformation to bring to non-linear

ExponentialTransformation to push nebulosity

LocalHistogramEqualization

MultiscaleLinear Transform for sharpening

HistogramTransformation

Preparing separate Sii, Ha, and Oiii linear masters for tonemapping (applied to each master individually):

TGV & MMT noise reduction (via Jon Rista's method)

ArcsinhStretch and HistogramTransformation to bring to non-linear

Removed stars via StarNet++

Further removed background artifacts with MMT

DBE on the SII and OIII channel to help corners

LinearFit to Ha

Combined prepared Sii, Ha, and Oiii masters with ChannelCombination:

R: Sii

G: Ha

B: Oiii

CMOS Imagers
Cloudy Nights
Narrowband imaging
Suburban Astrophotography
ZWO ASI1600MM/QHY163M
Hubble Palette Group

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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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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	4726202
PixInsight job	OB2ZG2P3O8YQY46AM20CJ544KXL4VX50
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	21h38m31s.70
RA (top/left)	21h46m56s.45
RA (top/right)	21h41m46s.40
RA (bottom/right)	21h29m48s.27
RA (bottom/left)	21h35m30s.72

Dec (center)	+57°30′29″.9
Dec (top/left)	+56°48′08″.7
Dec (top/right)	+58°46′45″.2
Dec (bottom/right)	+58°10′39″.0
Dec (bottom/left)	+56°13′56″.2

Image Index:

Contribution Index (beta):

IC 1396 : The Elephants Trunk Nebula SHO

IC 1396 : The Elephants Trunk Nebula SHO

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Sky plot

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Image Index:

Contribution Index (beta):

IC 1396 : The Elephants Trunk Nebula SHO

IC 1396 : The Elephants Trunk Nebula SHO

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

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