Fred Lawrence Whipple Observatory

During the government shutdown, the Fred Lawrence Whipple Observatory Visitor Center and Observatory grounds will be closed to the public. During this time, we will continue to maintain our Facebook page and will continue to answer phones and emails. Please reach out to us through any of these avenues for questions or concerns. We are sorry for any inconvenience this may cause and look forward to serving you again soon.

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

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.


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