Third Quarter Moon and Temple of Poseidon

May 09, 2012

GibbousMoonrise (2)

: Chris Kotsiopoulos; Chris’ Web site 
Summary AuthorChris Kotsiopoulos; Jim Foster

The photo above shows what appears to be an impossibly large third quarter Moon sidling up to the approximately 2,500-year-old Temple of Poseidon in Sounion, Greece. It was taken on March 15, 2012 at about 2:00 a.m. Like the Earth, one-half of the Moon is always illuminated by the Sun. At the first quarter and third quarter phases, we're seeing about one half of the portion that's sunlit and one half that's in shadow. The huge apparent size of this particular Moon, or any phase of the Moon when it’s near the horizon, is due to the Moon illusion effect. However, it should be noted that the primary reason for the Moon's extra large apparent size in this photo is the 600 mm focal length of the lens that was used.

Photo details: Canon EOS 550D camera; 0.5 sec. exposure; 7.5 aperture; ISO 400; 600 mm focal length.

For more moon images take a look at EPOD's Facebook Photo Album Supermoon 2012