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Contains:  NGC 281
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NGC 281"The Pac-Man Nebula", 





    
        

            Mike Freeberg
NGC 281"The Pac-Man Nebula"

NGC 281"The Pac-Man Nebula"

Technical card

Resolution: 2742x1834

Dates:Sept. 15, 2016Sept. 16, 2016Sept. 26, 2016

Frames:
Astronomik 12nm Ha Clip Filter: 44x1200" ISO1600 bin 1x1
Astronomik 12nm OIII Clip Filter: 25x1200" ISO1600 bin 1x1

Integration: 23.0 hours

Darks: ~25

Flats: ~40

Bias: ~100

Avg. Moon age: 17.68 days

Avg. Moon phase: 72.26%

Astrometry.net job: 1266907

RA center: 13.201 degrees

DEC center: 56.630 degrees

Pixel scale: 1.104 arcsec/pixel

Orientation: -88.322 degrees

Field radius: 0.506 degrees

Description

NGC 281 is an H II region in the constellation of Cassiopeia and part of the Perseus Spiral Arm. It includes the open cluster IC 1590, the multiple star HD 5005, and several Bok globules. Colloquially, NGC 281 is also known as the Pacman Nebula for its resemblance to the video game character.
The nebula was discovered in August 1883 by E. E. Barnard, who described it as "a large faint nebula, very diffuse." The multiple star HD 5005, also called
β 1 . It consists of an 8th-magnitude primary with four companions at distances between 1.4 and 15.7 seconds of arc. There has been no appreciable change in this quintuple system since the first measurements were made in 1875.(Wikipedia)

Comments

Author

Mike17
Mike Freeberg
License: None (All rights reserved)
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NGC 281"The Pac-Man Nebula", 





    
        

            Mike Freeberg

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