Elephant's Trunk Nebula (IC 1396) (Chris Gnam)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: B161 · B163 · B365 · B367 · Erakis · Erakis (μ Cep) · HD205196 · HD205510 · HD205948 · HD206081 · HD206183 · HD206267 · HD206482 · HD206773 · HD207086 · HD239710 · HD239712 · HD239724 · HD239725 · HD239727 · HD239729 · HD239748 · HD239767 · IC 1396 · LBN 451 · LBN 452 · LBN 455 · LBN 456 · LBN 457 · LDN · And 33 more.

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Elephant's Trunk Nebula (IC 1396)

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Elephant's Trunk Nebula (IC 1396)

Elephant Trunk Nebula. Got about 5.5 hours on this target over two nights. This was also my first time using Pixinsight which has dramatically improved things!

On another note, the Optolong L-eXtreme gives the image a crazy green hue (at least, I believe that's what causes it) which the Pixinsight's Background Extraction removes flawlessly, however I noticed that even though the background space appeared black, the stars all had a slight green Halo around them. The only way I could seemingly fix this was to bring it into Lightroom and adjust the color mix. I slid the green more towards yellows, and then reduced the saturation a bit and it fixed the problem. But it felt like a bit of a "cheat".

I'm still brand new to Pixinsight though (this was my first attempt with it) so if there's a better way to solve this in there, let me know! Overall though. I was shocked at how (relatively) easy it was to pull out so much detail. In all my time with DSS + adobe LR/PS I could never get anywhere near this kind of detail.

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

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
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	5840720
PixInsight job	QSUUT0JFAZQ434HOJ0GLJOEPV1GO9DPN
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h39m08s.86
RA (top/left)	21h49m57s.17
RA (top/right)	21h43m30s.47
RA (bottom/right)	21h28m05s.77
RA (bottom/left)	21h35m07s.70

Dec (center)	+57°33′22″.8
Dec (top/left)	+57°07′02″.2
Dec (top/right)	+58°58′01″.2
Dec (bottom/right)	+57°56′10″.3
Dec (bottom/left)	+56°08′15″.7

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Elephant's Trunk Nebula (IC 1396)

Elephant's Trunk Nebula (IC 1396)

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Image Index:

Contribution Index (beta):

Elephant's Trunk Nebula (IC 1396)

Elephant's Trunk Nebula (IC 1396)

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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