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The Summer Triangle rides high overhead on summer nights in the northern hemisphere. It is composed of brilliant Vega in Lyra at the top left of the frame, Deneb in Cygnus at lower left and Altair in Aquila at right. Click your mouse cursor in the image to see identifications. The rich star clouds and dark nebulae of the Milky Way dominate the image. The Great Rift in the Milky Way runs through the star clouds in Aquila at upper right through Cygnus. Le Gentil 3, a large dark nebula, is at bottom left. The Northern Coalsack, another large dark nebula, lies to the right of Deneb and marks the beginning of the Great Rift. The North America Nebula is a bright red hydrogen-alpha emission nebula just below Deneb. Another bright emission nebula, IC 1318, the Butterfly nebula, surrounds Sadr, Gamma Cygni, at the heart the Northern Cross. Exposure Data
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