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Check out the Big Dipper!

Harrington
The most famous pattern of stars north of the celestial equator, the Big Dipper dominates this month’s late-spring sky. Its high position as the late-evening sunset fades makes it a prime hunting ground for our binoculars.

Let’s begin with the closest open cluster visible from Earth, cataloged as Collinder 285. Nearly every resident of the Northern Hemisphere has seen it at least once, yet few know it exists. If this sounds like a riddle to you, in a way I suppose it is. The five brightest stars in Collinder 285 belong to a much more famous asterism — the Big Dipper itself.

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