NGC 281

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Description: This emission nebula is known as 'The Pacman Nebula'. It is a large ionized hydrogen cloud that is made visible by the radiation from the young, hot stars within it. This open cluster is designated IC 1590. The central star in this cluster is responsible for most of the ionizing radiation.
Constellation: Cassiopeia
Distance: 10,000 light years
Apparent Size: 4'
Date: 6 and 7 september 2005
Equipment: FSQ 106 @ f/5, ST2000XM, MI-250
Exposure: Ha(HaR)GB, all binned 1x1

Ha (13nm): 3 hours

RGB: 60-60-30 minutes