Trails at Both Sides of Equator

By: Amir H. Abolfath


Region: Middle East

Site: Alborz Mountains - Iran

Date: January 2009

In this 5-hour accumulated exposure from a mountainous village in Iran stars of constellations Orion and Canis Major trail in the sky as the Earth rotates. Note how the trails are curved opposite on the upper and lower sides. Sirius, the brightest star of the entire night sky which is located in the southern celestial hemisphere, is the lower prominent trail, curved toward the south celestial pole.Stars in the mid-sky are those of Orion's belt which are located near the celestial equator and their trails are rather straight lines. Above the equator startrails are curved toward the north celestial pole, such as the bright yellow-red star Betelgeuse in Orion. Amir Abolfath-

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