The Horsehead, the Flame and IC 434 (MountainAir)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 48 Ori · 50 Ori) · B33 · Flame Nebula · Horsehead nebula · IC 431 · IC 432 · IC 434 · IC 435 · LBN 944 · LBN 946 · LBN 953 · LBN 954 · LBN 958 · LBN 962 · LBN 965 · LDN 1635 · LDN 1636 · NGC 2023 · NGC 2024 · Orion B · Sh2-277 · The star Alnitak (ζ Ori · The star σ Ori · VdB51

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The Horsehead, the Flame and IC 434

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The Horsehead, the Flame and IC 434

And now, for one of my favorite and most-inspiring targets...

The Horsehead Nebula is a dark nebula located in the constellation Orion. It is a small, dense cloud of gas and dust that is silhouetted against the bright emission nebula IC 434 and next to the Flame Nebula NGC 2204. The Nebula is part of the much larger Orion Molecular Cloud Complex, which is a region of active star formation.

The nebula is approximately 1,500 light-years away from Earth, and was first discovered in 1888 by Williamina Fleming in plates from the Harvard College Observatory.

Being one of my favorite targets for the RASA with a OSC camera, I have imaged it each of the three years I've been in this hobby. It's always exhilarating to see that first image download over USB, but getting trouble-free integration time is a challenge: This target arrives just prior to the winter season, when we have poor seeing and winds that badly affect this giant RASA sail. And don't even get my started on Alnitak!

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	6926382
PixInsight job	QBGWLG0WHGD0HBOQ3ZO9E4WD41UBFK0N
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h41m00s.82
RA (top/left)	05h37m28s.54
RA (top/right)	05h37m36s.44
RA (bottom/right)	05h44m33s.21
RA (bottom/left)	05h44m24s.20

Dec (center)	-02°27′39″.9
Dec (top/left)	-01°03′03″.5
Dec (top/right)	-03°53′48″.4
Dec (bottom/right)	-03°52′19″.6
Dec (bottom/left)	-01°01′42″.8

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The Horsehead, the Flame and IC 434

The Horsehead, the Flame and IC 434

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Image Index:

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The Horsehead, the Flame and IC 434

The Horsehead, the Flame and IC 434

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