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Cassiopeia Constellation

m103,open cluster m103,ngc 581

Messier 103

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Messier 103 (M103) is an open star cluster located in the northern constellation Cassiopeia. The cluster lies at a distance of 10,000 light years from Earth and has an apparent magnitude of 7.4. Its designation in the New General Catalogue is NGC 581.
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ngc 7654,m52,open cluster

Messier 52

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Messier 52 (M52) is a bright open cluster located in the northern constellation Cassiopeia. The cluster has an apparent magnitude of 6.9 and lies at… Read More »Messier 52