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Contains:  NGC 281
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NGC 281 - Pacman Nebula in Cassiopeia

Technical card

Resolution: 3322x2631

Dates:Sept. 25, 2016

Astrodon 3nm Ha: 15x1200" bin 1x1
Astrodon 3nm OIII: 15x1200" bin 1x1
Astrodon 3nm SII: 15x1200" bin 1x1

Integration: 15.0 hours

Avg. Moon age: 24.27 days

Avg. Moon phase: 28.16% job: 2590378

RA center: 13.143 degrees

DEC center: 56.681 degrees

Pixel scale: 0.880 arcsec/pixel

Orientation: 93.402 degrees

Field radius: 0.518 degrees

Locations: Home, Nottinghamshire, Nottinghamshire, United Kingdom

Data source: Unknown


NGC 281 (the Pacman Nebula) is an 80 light-year diameter dust cloud some 10,000 light years away in the constellation of Cassiopeia. The nebula was discovered by EE Barnard in August 1883.

Contained within the cloud is the open cluster IC 1590.

NGC 281 contains a number of dark globules within which (it is believed) new stars are forming. These are named Bok Globules after the Dutch-American astronomer – Bart Bok who first described these in the 1940s.

NGC 281 was photographed from our home observatory in the UK between 6 and 25 September 2016. Steve has previously presented his version, but this is my first attempt at producing a ‘Hubble Palette’ version with the data.

Capture details:

Telescope: Skywatcher Esprit 120
Camera: QSI 690
Filters: Astrodon 3nm NB
Mount: Mesu 200

Ha: 15 x 1200s
OIII: 15 x 1200s
SII: 15 x 1200s

A total of 15 hours exposure.



Elisabeth Milne
License: None (All rights reserved)

Sky plot

Sky plot


NGC 281 - Pacman Nebula in Cassiopeia, 


            Elisabeth Milne

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