Barnard, who described it as “a large faint nebula, very diffuse.” The multiple star HD 5005, also called, was discovered by S. The nebula was discovered in August 1883 by E. Colloquially, NGC 281 is also known as the Pacman Nebula for its resemblance to the video game character. It includes the open cluster IC 1590, the multiple star HD 5005, and several Bok globules. NGC 281 is an H II region in the constellation of Cassiopeia and part of the Perseus Spiral Arm. Imaging telescopes or lenses: ASA10N-OK3 10″ f/3.6 Newtonian Astrograph Even in low southern latitudes below 25ºS is can be seen low in the North. In northern locations above 34ºN latitude it is visible year-round and in the (sub)tropics it can be seen at its clearest in from September to early November in its characteristic ‘M’ shape. It is bordered by Andromeda to the south, Perseus to the southeast, and Cepheus to the north. It is easily recognizable due to its distinctive ‘M’ shape when in upper culmination but in higher northern locations when near lower culminations in spring and summer it has a ‘W’ shape, formed by five bright stars. Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations today. Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty.
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