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Contains:  NGC 281
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Pacman Nebula NGC 281, 





    
        

            Barry Wilson
Pacman Nebula NGC 281

Pacman Nebula NGC 281

Technical card

Resolution: 3304x2550

Dates:Oct. 25, 2019

Frames:
Astrodon Ha 3nm: 30x1200" bin 1x1
Astrodon OIII 3nm: 30x1200" bin 1x1
Astrodon SII 3nm: 30x1200" bin 1x1

Integration: 30.0 hours

Avg. Moon age: 26.50 days

Avg. Moon phase: 10.04%

Astrometry.net job: 3039129

RA center: 13.234 degrees

DEC center: 56.651 degrees

Pixel scale: 0.743 arcsec/pixel

Orientation: 89.999 degrees

Field radius: 0.431 degrees

Locations: Entre Encinas y Estrellas E-EyE, Fregenal de la Sierra, Extremadura, Spain

Data source: Own remote observatory

Remote source: e-EyE Extremadura

Description

From Wikipedia: "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,[3] spanning over a larger area of 40 arcmin.[4] A recent distance from radio parallaxes of water masers at 22 GHz made during 2014 is estimated it lies 2.82±0.20 kpc. (9200 ly.) from us.[5] Colloquially, NGC 281 is also known as the Pacman Nebula for its resemblance to the video game character.

E. E. Barnard discovered this nebula in August 1883, who described 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."

Data acquisition: Barry Wilson & Steve Milne
Processing: Barry Wilson

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Barry-Wilson
Barry Wilson
License: None (All rights reserved)
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Pacman Nebula NGC 281, 





    
        

            Barry Wilson