Holcomb Observatory and Planetarium

Public Tours

Night Observatory 02

Holcomb Observatory is open 2/21, 2/27, & 2/28.  We will be closed on 2/20.  The Observatory is also closed on every weekend beginning 3/6 through 3/21 for Spring Break.  The Observatory will re-open for public tours beginning 3/27.

No reservations are needed for public tours (Fridays & Saturdays).


Doors open at 7:00 PM
Planetarium show at 7:30 PM
Telescope Viewing at 8:30 PM to 10:00 PM (weather permitting; see ClearSky

Holcomb Observatory and Planetarium is open to the public most Friday and Saturday evenings. The current dates of operation are listed on right-hand side of this webpage. The current planetarium program focuses on the exploration of the planet Jupiter. Following the Jupiter portion of the program the dome of the planetarium comes alight with a tour of the night time sky pointing out stars, constellations, and planets (including Jupiter and its moons) currently visible in our Hoosier skies. After the planetarium show visitors will have an opportunity to view through Indiana's largest telescope weather permitting (check the ClearSky Clock below for cloud forecast). Objects that may be viewed include the planets, assorted stars clusters, nebulae, and perhaps the Moon if visible.

Admission is $2 for children/students and $3 for adults for the planetarium show. Viewing through the telescope is always free, weather permitting.   We do not accept checks or credit cards so please pay in cash. 

For patron information there are 3 sets of steps to the telescope. Wheelchair accessibility is available in the Planetarium and Lobby area only. No elevator is available to the telescope viewing area.

Holcomb Observatory and Planetarium is located on the north end of the Butler University campus and can be reached by heading west on 46th Street from Meridian Street. Butler University Campus Map (PDF)

ClearSky Clock