Here's a rare image of the
Summer Triangle from the southern hemisphere.
Image Credit & Copyright: Yuri Beletsky (Carnegie Las Campanas Observatory)
After sunset an exceptionally intense, reddish airglow flooded this Chilean winter night skyscape. Above a sea of clouds and flanking the celestial Milky Way, the airglow seems to ripple and flow across the northern horizon in atmospheric waves. On this night it was visible to the eye, but seen without color. Antares and the central Milky Way lie near the top, with bright star Arcturus at left. Straddling the Milky Way close to the horizon are Vega, Deneb, and Altair, known in northern nights as the stars of the Summer Triangle.
I have to admit that at first I had trouble picking out the stars of the triangle in this unfamiliar setting. But I think that Vega is the bright star at the lower right edge. An imaginary line from Vega straight across to the other side of the Milky Way takes you to Deneb. And since it's upside down compared to what we're used to, Altair is higher in the sky and about midway between the right hand edge and the Milky Way.
