Asterism: Summer Triangle

The Summer Triangle is an astronomical asterism in the northern celestial hemisphere, best visible in the summer. This imaginary triangle is made up of Altair, Deneb, and Vega and was first popularised by Sir Patrick Moore.

This is a huge asterism, but once you have found it you can use it as a sign post for the Milky Way allowing you to find the many deep sky objects it contains.

Astronomical Objects in the Summer Triangle

The Dumbbell Nebula is one of the largest and most impressive planetary nebulas visible to northern hemisphere amateur observers.

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A treasure of summer skies, this planetary nebula shows up as a well defined ring, with a small central structure.

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Open clusters are good targets in even light polluted skies, and being situated in the summer triangle make excellent evening targets in even the lighter summer months.

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What equipment do you need to see Summer Triangle?

Technically you don't need any equipment at all to see Summer Triangle! However, to see the fainter stars in this asterism, especially from a light-polluted location would require a good pair of binoculars.