Summer Triangle

m71,m71 globular cluster

Messier 71

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Messier 71 (M71) is a globular cluster located in the small northern constellation Sagitta, the Arrow. The cluster lies at an approximate distance of 13,000 light years from Earth and has an apparent magnitude of 6.1. It has the designation NGC 6838 in the New General Catalogue.
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m57,ring nebula,ngc 6720

Messier 57: Ring Nebula

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Messier 57 (M57), also known as the Ring Nebula, is a well-known planetary nebula located in the northern constellation Lyra. The Ring Nebula has an apparent magnitude of 8.8 and lies at an approximate distance of 2,300 light years from Earth. It has the designation NGC 6720 in the New General Catalogue.
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m39,open cluster in cygnus,ngc 7092

Messier 39

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Messier 39 (M39) is a large open cluster located in the constellation Cygnus, the Swan. The cluster has an apparent magnitude of 5.5 and lies at a distance of 824.4 light years from Earth. It has the designation NGC 7092 in the New General Catalogue.
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