Fred Lawrence Whipple Observatory

SUMMER HOURS: The Visitor & Science Center at Whipple Observatory is operating on Summer Hours from May 27 through September 7, and will be open to the public 8:30am - 4:30pm on Wednesday, Thursday, and Friday only. Tours run on Wednesdays only through the end of June 2019 and will resume in September 2019. Please plan accordingly..

The Fred Lawrence Whipple Observatory (FLWO) is the largest field installation of the Smithsonian Astrophysical Observatory (SAO) outside Cambridge, MA. The site is​ on Mt. Hopkins, Arizona​. The major instrument ​at​ ​the site is the MMT Observatory's 6.5-m-diameter optical telescope. The current suite of FLWO telescopes includes a 1.2-m-diameter imaging optical telescope; the 1.5-m Tillinghast optical spectroscopic telescope; the HAT (Hungarian-made Automated Telescope) array of five optical telescopes; the MINERVA array of four 70-cm optical telescopes; the MEarth array of eight 40-cm optical telescopes; and the VERITAS array of four 12-m telescopes for gamma-ray astronomy.

For an up-to-date calendar of events for FLWO, please visit our Facebook page.


Public Tours, Lectures & Visitors Center (520) 879-4407
Site Director: Dr. Pascal Fortin (520) 879-4419
Public Affairs: Amy Oliver (520) 879-4406
Science Office: Dr. Emilio Falco (520) 879-4415