B33 Horsehead Nebula in Ha (Richard Pattie)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: Horsehead nebula · IC 434 · NGC 2023

B33 Horsehead Nebula in Ha, Richard Pattie

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B33 Horsehead Nebula in Ha

The iconic Horsehead Nebula is a dark nebula in the constellation Orion. The nebula is located just to the south of the star Alnitak, which is farthest east on Orion's Belt. The Horsehead Nebula is approximately 1500 light years from Earth. It is one of the most identifiable nebulae because of the shape of its swirling cloud of dark dust and gases, which bears some resemblance to a horse's head when viewed from Earth. The red or pinkish glow originates from hydrogen gas predominantly behind the nebula, ionized by the nearby bright star Sigma Orionis. Magnetic fields channel the gases leaving the nebula into streams, shown as streaks in the background glow. A glowing strip of hydrogen gas marks the edge of the massive cloud and the densities of stars are noticeably different on either side. [Source: adapted from Wikipedia]

This is by far my longest integration.

Version A was done before I finished all my integration

Version B was made up of 49 Ha lights, 26 darks, 60 flats, 50 bias, and better sharpening.

Version C is brightened up and has a couple added star spikes

Processed with ImagesPlus 6.0. False color added in Photoshop.

Original
B
Final
C

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
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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.

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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.
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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	509764
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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B33 Horsehead Nebula in Ha

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Image Index:

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B33 Horsehead Nebula in Ha

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