The observatory, located in the Nature Study Area (off Kean Avenue), features a 6 ½ -foot Newtonian reflecting telescope, which was built and donated by Tom McCague, retired Moraine Valley professor. The telescope is made of common hardware store items, such as plywood, Teflon, PVC pipe, and glass. For this reason, it is also considered a Dobsonian-style telescope, named for John Dobson, a renowned amateur astronomer known for his inexpensive ways of building telescopes.

The telescope is housed outside in a dome on the G. Jack Bradley Observation Deck. The remote area is equipped with motion-detection lights that can be controlled during observation and monitored by security cameras. The telescope is used as a teaching tool, not only for Moraine Valley, but local schools and community groups as well. Only trained personnel are allowed to utilize the telescope. Request a field trip.

The college hosts monthly open viewing nights for the public during the spring, summer and fall.