5-exp, 5EV HDRI | Nikon D3 + 14-24mm f/2.8G
Arecibo Observatory, Puerto Rico, 13 Nov 2010
© 2010 José Francisco Salgado, PhD
The observatory's 305-m (1,001 ft) radio telescope is the largest single-aperture telescope ever constructed. It carries out three major areas of research: radio astronomy, aeronomy (using both the 305-m telescope and the observatory's lidar facility), and radar astronomy observations of solar system objects.