Astronomy students at Williams College will host free shows for the public at 8 p.m. Fridays, Feb. 5 through May 13, at the Milham Planetarium located inside the Old Hopkins Observatory, 829 Main St.

Shows will not be held during spring break: March 18, 25 and April 1.

Audiences will be treated to shows from the high-precision Zeiss Skymaster ZKP3/B opto-mechanical planetarium projector. Shows last about 50 minutes.

Reservations are required by contacting Michele Rech at 413-597-2188 or Others will be admitted as space permits. Large groups should call for special appointments.