Observatory Coordinator

Prof. Harold Geller

Observatory Director


Associate Professor

Astronomy, Astrobiology, & Science Education


Hours & Tours

We host free public tours on alternating Monday evenings during the academic year, each beginning shortly after sunset.   Check out our calendar for the next public night.

Private tours are available on a limited basis, and can be scheduled by emailing the Observatory Coordinator.  Most private tours are conducted in the evening to facilitate viewings through our primary telescope.  However, we can accommodate tours of our facilities and equipment while the sun is out.

Some of the courses offered by the Astronomy Department have a specially scheduled tour or project at the observatory.  Feel free to ask your instructor for details about these assignments, and how to sign up for the appropriate type of tour.


Visiting Address:
Research Hall
10401 York River Rd
Fairfax, VA 22030

Mailing Address:
George Mason University
4400 University Drive, MSN: 3F3
Fairfax, VA 22030-4444



If you have a regular permit for parking on Mason’s campus, feel free to park in your usual lot.  If you are not familiar with Mason’s campus, we recommend

Shenandoah Parking Deck
Sandy Creek Way
Fairfax, VA 22030

The 2015-2016 fee schedule is $3 per hour, but is subject to change without notice.  If you don’t mind a walk, there is also street parking available off campus.


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