Horsehead Nebula (James Hixon)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: Flame Nebula · IC 434 · IC 435 · NGC 2023 · Orion B · The star σOri

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Horsehead Nebula

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Horsehead Nebula

I've been working on this one for a long time. This contains exposures from sessions stretching over three months. And, I've been testing shots of this since September.

The Horsehead Nebula

It's common for women in science to have been overlooked by history in spite of their acuity . Their accomplishments have typically been attributed to the men they worked for.

When Williamina Fleming discovered the Horsehead Nebula in 1888, the initial publication gave credit to her boss, Harvard astronomer Edward Pickering. However, subsequent publications all gave her credit for the discovery, and rightly credited her and the "Harvard Computers" - a team of mathematician women who processed astronomical data - with their discoveries.

In addition to discovering 59 gaseous nebulae, over 310 variable stars, she developed a system for classifying stars based on their spectra. And, she discovered the first white dwarf star in 1910, a year before she died of pneumonia.

The Horsehead Nebula is probably the most iconic object in the night sky outside our solar system. I'm glad Williamina found it.

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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	Basic success
Started	...
Astrometry.net job	3368442
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Horsehead Nebula

Horsehead Nebula

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Image Index:

Contribution Index (beta):

Horsehead Nebula

Horsehead Nebula

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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