The Arecibo Observatory, also known as the National Astronomy and Ionosphere Center and formerly known as the Arecibo Ionosphere Observatory, is an observatory in Barrio Esperanza, Arecibo, Puerto Rico owned by the US National Science Foundation.
The observatory's main instrument was the Arecibo Telescope, a 305 m spherical reflector dish built into a natural sinkhole, with a cable-mount steerable receiver and several radar transmitters for emitting signals mounted 150 m above the dish. Completed in 1963, it was the world's largest single-aperture telescope for 53 years, surpassed in July 2016 by the Five-hundred-meter Aperture Spherical Telescope in China.
June 1 - July 31; December 15 - January 15
Daily: 9 am - 4 pm
August 1 to December 14 and January 16 to May 31
Wed - Sun: 9 am - 4 pm
Mon - Tue: closed
Closed on: Good Friday, Easter, Mother's Day, Father's Day, Thanksgiving, Christmas, New Year and Three Kings Day.
Adults: $12
Children (5 - 12), seniors: $8
Wikipedia https://en.wikipedia.org/wiki/Arecibo_Observatory
Official website http://www.naic.edu/general/
Facebook https://www.facebook.com/Arecibo.Observatory/
Twitter https://twitter.com/naicobservatory
Email reservations@naic.edu
Phone +1 787 878 2612
Address Arecibo Observatory HC-3 Box 53995 Arecibo, PR 00612
Coordinates 18°20'46.427" N -66°45'8.315" E
