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Astronomical Observatories
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Managed By: Icon Here Astronomers
Historically, observatories were as simple as containing a sextant (for measuring the distance between stars) or Stonehenge (which has some alignments on astronomical phenomena). Modern astronomical observatories typically contain one or more permanently mounted telescopes contained in buildings with a rotating or removable dome.
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Image for Gaithersburg Latitude Observatoryview gallery

here0 km

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Astronomical ObservatoriesGaithersburg Latitude Observatory

in Astronomical Observatories

One of six world-wide latitude observatories built in 1899. The precise nightly star measurements from here were used to prove and monitor the "wobble" of the earth on its north-south axis. Satellites replaced these observatories in 1982.

posted by: Groundspeak Premium Member HaricotVert_52

location: Maryland

date approved: 8/13/2016

last visited: 5/25/2015

Image for Turner Farm Observatory - Fairfax, Virginiaview gallery

SWSW18.5 km

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Astronomical ObservatoriesTurner Farm Observatory - Fairfax, Virginia

in Astronomical Observatories

Located in Turner Park along the northbound side of Springvale Road.

posted by: Groundspeak Premium Member flyingmoose

location: Virginia

date approved: 3/16/2021

last visited: 1/29/2022

Image for Phoebe Waterman Haas Public Observatory - Washington, DCview gallery

SESE31.7 km

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Astronomical ObservatoriesPhoebe Waterman Haas Public Observatory - Washington, DC

in Astronomical Observatories

An observatory at the National Air and Space Museum, part of the Smithsonian Institution.

posted by: Groundspeak Premium Member bluesnote

location: District of Columbia

date approved: 11/24/2018

last visited: 11/23/2018

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