The SUNY Oneonta Observatory is an astronomical observatory in Oneonta, New York, home to the state's largest optical telescope and one of the largest publicly open east of the Mississippi, a one-meter (40 inch) Newtonian reflector constructed by JMI Telescopes of Lakewood, Colorado.

[1] The JMI design is more cost-effective than other telescopes because of its Dobsonian mount and optical system.

[2] After construction of a new dedicated observatory building, the telescope had a "first light" ceremony on May 30, 2009.

For data acquisition, students can use a research-grade SBIG STL-1001E CCD imaging system, a high-resolution SBIG spectrograph, and a photoelectric photometer.

The college hosts regular public viewing sessions, generally on designated dates once a month year-round.