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Messier 55 |
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 | M55 is a globular cluster in the constellation Sagittarius. Quite large on the sky (about two thirds of the Moon's diameter), but with a very loose, almost non-globular, appearance, M55 is about 18000 light-years away and about 100 light-years across. In a 8-inch scope, this is a large but fairly faint globular. At 81X, dozens of stars can be resolved in a roughly globular shape. It did appear slightly flattened, however. At 122X, even more stars are resolved. For a globular, it doesn't seem very rich, as the background glow is dim instead of bright. |
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| You can find more information about this Messier object by visiting: SEDS - The Messier Catalog. |
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M55 NGC 6809 Other description: Globular cluster highly resolved. Constellation: Sagittarius Dreyer description: Globular cluster, pretty bright, large, round, very rich in stars, very gradually brighter middle, stars of magnitude 12 to 15; = M55. Magnitude: 7.0 RA: 19h 40m 16.6s Dec: -30°57'27" RA: 19h 40m 00.0s Dec: -30°58'00" (Epoch 2000) Azm: 320°32'58" Alt: -71°22'03" Rise: 22:54 Transit: 02:27 Set: 05:56 Size:19.0' |