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Lesson Tag: Cassiopeia

Pacman Nebula, NGC 281

Target Type R. A. Dec. Constellation Magnitude Size NGC281 Nebula 00h 52m 48s +56° 36′ 00″ Cassiopeia +7.4 35×30 arcmins Overview This might be one of the best-named objects we’ve looked for in the history of the VAC. When you see the picture below, it’s easy to understand why NGC 281 carries the rather more …

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M103 Open Cluster in Cassiopeia

Target Type R. A. Dec. Constellation Magnitude Size M103 Open Cluster 01h 33m 23s +60° 39′ 00″ Cassiopeia +7.4 5.0 arcmins Overview M103 is the last object from the original catalog of objects compiled by Charles Messier. It is a small star cluster easily located near Ruchbar, one of the bright stars forming the easily …

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Galaxies NGC 147 and NGC 185

Target Type R. A. Dec. Constellation Magnitude Size NGC 147 Elliptical Galaxy 00h 33m 12s +48° 30′ 32″ Cassiopeia 9.6 9.4 x 5.4 arcmins NGC 185 Elliptical Galaxy 00h 38m 58s +48° 20′ 15″ Cassiopeia 9.2 12.9 x 10.8 arcmins Overview These two galaxies are companions of the famous Andromeda Galaxy (M31). They, along with …

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