NGC 281 (Sh2-184) • Pacman Nebula in HOO (Douglas J Struble)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1590 · NGC 281

NGC 281 (Sh2-184) • Pacman Nebula in HOO, Douglas J Struble

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NGC 281 (Sh2-184) • Pacman Nebula in HOO

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NGC 281 (Sh2-184) • Pacman Nebula in HOO

The rain here in Michigan (USA) has been horrible this year. I decided to re process some old data, as I have been getting the processing blues. In this instance, I re processed NGC 281 (Pacman Nebula) from SHO to HOO by removing the SII into a more natural HOO palette. I kept the SHO stars, though, as I wanted a more broad color of yellow and blue stars. Everything else was reprocessed from the ground up, though. I kept the stars small, as I really wanted the texture to pop out.

NGC 281, IC 11 or Sh2-184 is a bright emission nebula and part of an H II region in the northern constellation of Cassiopeia and is part of the Milky Way's Perseus Spiral Arm. This 20×30 arcmin sized nebulosity is also associated with open cluster IC 1590, several Bok globules and the multiple star, B 1. It collectively forms Sh2-184, spanning over a larger area of 40 arcmin. Colloquially, NGC 281 is also known as the Pacman Nebula for its resemblance to the video game character.

Edward Emerson Barnard discovered the nebula in August 1883, describing it as "a large faint nebula, very diffuse." Multiple star 'B 1' or β 1 was later discovered by S. W. Burnham, whose bright component is identified as the highly luminous O6 spectral class star, HD 5005 or HIP 4121. It consists of an 8th-magnitude primary with four companions at distances between 1.4 and 15.7 arcsec. There has been no appreciable change in this quintuple system since the first measures were made in 1875.

Final
Original
B
C

B

Description: December 24th, 2021 Stellar Shot of the Week

Uploaded: ...

C

Description: August 10, 2022 NASA APOD

Uploaded: ...

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Status	Basic success
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Astrometry.net job	4735691
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NGC 281 (Sh2-184) • Pacman Nebula in HOO

NGC 281 (Sh2-184) • Pacman Nebula in HOO

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NGC 281 (Sh2-184) • Pacman Nebula in HOO

NGC 281 (Sh2-184) • Pacman Nebula in HOO

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