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 Post subject: Double cluster
PostPosted: Thu Oct 18, 2018 6:38 pm 
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Joined: Sun Oct 25, 2009 3:56 pm
Posts: 1214
Location: Caithness
One more from last night. 15x60sec exposures.

The double cluster is a pair of open clusters located 7600 light years away in the constellation of Perseus. They are most likely around 13 million years old, so very young in astronomical terms. The clusters are visible with the unaided eye between the constellations of Perseus and Cassiopeia as a brighter patch in the winter Milky Way. In small telescopes the cluster appears as an assemblage of bright stars located in a rich star field. Dominated by bright blue stars, the cluster also hosts a few orange stars.

Image

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BRIAN
Celestron Nexstar 8SE
Altair Astro 102 ED refractor with Lunt B600 CaK diagonal
Coronado PST DS, Daystar Quark
ZWO ASI120MM camera, Canon 1000D (astro modified)
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