Image: Arecibo naic big

Description: English: The 1000 ft. (305 m) diameter Arecibo radio telescope is the largest single-dish telescope in the world. The spherical dish is too large to move. Pointing is accomplished by the rotation of the earth. A 40-degree wide band of the sky parallel to the celestial equator is visible to the telescope. This photo appears to be one that was taken to document the 1974 upgrading of the aluminum dish.
Title: Arecibo naic big
Credit: APOD: November 29, 1998 - Arecibo: The Largest Telescope
Author: National Astronomy and Ionosphere Center, Cornell U., NSF
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License: Public domain
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