IC 4592 and IC 4601 (Gary Imm)

Celestial hemisphere: Southern · Constellation: Scorpius (Sco) · Contains: 10 Sco) · 10 ome02 Sco · 14 Sco) · 14 nu. Sco · 4 Oph · 4 psi Oph · 9 Sco) · 9 ome01 Sco · B40 · B41 · IC 4592 · IC 4601 · Jabbah · LBN 1113 · LBN 1114 · LBN 1115 · LBN 1119 · LDN 1717 · LDN 1719 · LDN 1721 · The star Jabbah (ν Sco · The star Jabhat Acrabi I (ω1 Sco · The star Jabhat Acrabi II (ω2 Sco · The star ψ Oph · VdB101 · VdB102 · VdB103

Powered byPixInsight

IC 4592 and IC 4601

Powered byPixInsight

IC 4592 and IC 4601

This object is a series of reflection and dark nebula located 400 light years away in the constellation of Scorpius at a declination of -19 degrees. It is nicknamed the Blue Horsehead nebula. As is my standard convention, north is up here, so you will have to stand on your head to see the horsehead shape.

The Horsehead Nebula is one of my favorite deep sky objects. This horsehead is completely different but also very appealing to me. It is much larger and more difficult to process than the original Horsehead because of its large scale and delicate nebulosity.

The nebula consists primarily of two reflection nebulae - IC 4592, the "eye" of the horse, and IC 4601, the "ear" of the horse. In addition, a wonderful dusty molecular cloud extends throughout the whole image. I like the different shades of brown seen in this cloud.

My favorite parts of the image are the blue and white reflection nebula wisps which are seen in close proximity to the bright stars. The wisps around IC 4601 are designated vdB 101, vdB 102 and vdB 103.

This image is a 4 panel RASA mosaic. I was reminded again of the difficulty of processing RASA mosaics. The high light gradients of the fast RASA optics do not calibrate out completely, especially at the image edges, making it a challenge to hide the seams of a mosaic.

Celestron RASA
ASI 6200 MM Pro
CMOS Imagers
Cloudy Nights
Texas Astronomy
RASA Images

100 Most Recent Images
100 of My Favorite images
Molecular Clouds
Orphaned Beauties Catalog (Complete)
Reflection Nebulae

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	8037054
PixInsight job	SP4DXYFSDV52OLOVVJSQTGEJPL904CDL
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	16h16m38s.98
RA (top/left)	16h26m50s.74
RA (top/right)	16h06m55s.41
RA (bottom/right)	16h06m15s.60
RA (bottom/left)	16h26m36s.19

Dec (center)	-19°16′46″.9
Dec (top/left)	-17°31′40″.6
Dec (top/right)	-17°23′42″.6
Dec (bottom/right)	-20°59′42″.8
Dec (bottom/left)	-21°08′20″.4

Image Index:

Contribution Index (beta):

IC 4592 and IC 4601

IC 4592 and IC 4601

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

In these collections

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

IC 4592 and IC 4601

IC 4592 and IC 4601

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

In these collections

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