Horsehead Nebula (Jeff Donaldson)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 48 sig Ori · 50 zet Ori · Alnitak · B33 · Horsehead nebula · IC 434 · IC 435 · NGC 2023 · NGC 2024 · Orion · Sh2-277 · The star Alnitak (ζOri) · The star σOri

Powered byPixInsight

Horsehead Nebula

Powered byPixInsight

Horsehead Nebula

The Horsehead Nebula is one of the most famous nebulae in the sky. It is visible as the dark indentation to the red emission nebula in the center of the above photograph. The horse-head feature is dark because it is really an opaque dust cloud that lies in front of the bright red emission nebula. Like clouds in Earth's atmosphere, this cosmic cloud has assumed a recognizable shape by chance. After many thousands of years, the internal motions of the cloud will surely alter its appearance. The emission nebula's red color is caused by electrons recombining with protons to form hydrogen atoms. On the image left is the Flame Nebula, an orange-tinged nebula that also contains filaments of dark dust.

Original
B
C
Final
D

B

Description: Fixed Stars and Colour Balance.

Uploaded: ...

C

Description: Using the GAME script in PixInsight I was able to isolate the flame and fix the color and also used another Gradient mask in GAME to boost the red channel only on IC434. Generate yet another Gradient mask to boost the red channel on the top right.

Uploaded: ...

D

Uploaded: ...

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	2972984
PixInsight job	DP4QU7109QRG5BGDANKB4ZYZ34EUQ90C
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	05h40m49s.20
RA (top/left)	05h38m30s.91
RA (top/right)	05h38m13s.100
RA (bottom/right)	05h43m07s.22
RA (bottom/left)	05h43m23s.88

Dec (center)	-02°28′20″.9
Dec (top/left)	-01°37′36″.7
Dec (top/right)	-03°15′48″.1
Dec (bottom/right)	-03°19′03″.5
Dec (bottom/left)	-01°40′52″.3

Image Index:

Contribution Index (beta):

Horsehead Nebula

Horsehead Nebula

Equipment

Acquisition details

Description

Comments

Revisions

B

C

D

Sky plot

Histogram

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

Horsehead Nebula

Horsehead Nebula

Equipment

Acquisition details

Description

Comments

Revisions

B

C

D

Sky plot

Histogram

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?

Delete this revision?

Delete this revision?

Delete this revision?

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