IC 1396A Elephant's Trunk Nebula (Aaron Freimark)

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

Powered byPixInsight

IC 1396A Elephant's Trunk Nebula

Powered byPixInsight

IC 1396A Elephant's Trunk Nebula

A made a second attempt at Elephant's Trunk, because I love seeing my progress :-) My wife says this doesn't look like an elephant at all, but a woman walking into the mist. I like that image much better!

Processing Steps, excluding all the trial and error:

1. WeightedBatchProcessing, Subframe Selector, Image Registration, Local Normalization, Image Integration, Drizzle Integration, Dynamic Crop

2. EZ Denoise

3. Arcsinh Stretch (on Ha) and EZ Soft Stretch (on OIII & SII)

4. StarNet++ to move stars to a separate image (stretched separately, Morphological Transformation to reduce sizes, then combined with PixelMath and set aside)

5. Clone Stamp on OIII and SII to clean up artifacts (cheating!)

6. PixelMath to combine as SHO

7. SCNR to reduce the green bias

8. Duplicate Ha to use for Luminance, then adjust with Curves and Histogram Transformation

9. LRGB Combination to apply L to the RGB image

10. Extract Wavelet Layers to find the layer with the remaining noise (white speckles), and use HT to brighten this. Use this image of noise as a mask on RGB, and then use Curves Transformation to reduce L.

11. Curves Transformation to make the colors slightly more pleasing

12. Unsharp Mask using a mask that applies the sharpening to just the brightest parts

13. Add stars back with PixelMath: 1-((1-RGB) * (1-star_mask))

Northeast Imagers
INDI Users
Mid-Hudson Astronomical Association (MHAA)

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	4009694
PixInsight job	FNSRPP1H8QOQFPIBCWJVM0NTSACMAOYF
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	21h35m31s.16
RA (top/left)	21h39m33s.32
RA (top/right)	21h39m30s.43
RA (bottom/right)	21h31m23s.69
RA (bottom/left)	21h31m36s.82

Dec (center)	+57°30′49″.9
Dec (top/left)	+57°08′09″.5
Dec (top/right)	+57°54′32″.1
Dec (bottom/right)	+57°53′01″.1
Dec (bottom/left)	+57°06′43″.9

Image Index:

Contribution Index (beta):

IC 1396A Elephant's Trunk Nebula

IC 1396A Elephant's Trunk Nebula

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

IC 1396A Elephant's Trunk Nebula

IC 1396A Elephant's Trunk Nebula

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information