GORT (Gamma-ray Optical Robotic Telescope) is a small ground-based telescope designed to support several NASA high-energy space observatories. These observatories operate in the gamma ray and X-ray region of the electromagnetic spectrum. GORT is used primarily to obtain synoptic multi wavelength surveillance data for objects being observed by the space observatories. The space observatories include the Fermi Gamma-ray Space Telescope (formerly the Gamma-ray Large Area Space Telescope, or GLAST), Swift, and XMM-Newton. The objects to be observed include blazars, GRBs, and polars.

In addition to supporting the science objectives for these missions, GORT will also support the Education and Public Outreach (E/PO) objectives for these missions. GORT is available for use by students and educators who wish to directly contribute to significant science projects by obtaining and analyzing image data.

GORT is part of the GTN (Global Telescope Network). This is a network of small and moderate size telescopes whose operators are interested in contributing to the science and education goals of NASA space observatories. The GTN consists of students, educators, amateur astronomers, and professional astronomers. The GTN has an observing list of program objects that will be monitored by the network. The GTN website also contains information about the nature of the objects being monitored as well as recommendations and advice for obtaining and reducing image data.

GORT has been developed and is managed by the NASA E/PO group at Sonoma State University (SSU).