Holcomb Observatory and Planetarium

Holcomb Observatory and Planetarium
Holcomb Observatory and Planetarium
Holcomb Observatory and Planetarium

The Observatory is open for public viewing on 2/12, 2/13, 2/19, 2/20, 2/26, and 2/27.

No reservations are needed for Public tours (Friday & Saturday evenings listed above).   For Private tours and planetarium shows please email  us or call 317-940-8333.

  • Doors Open at 7:00 PM
  • Planetarium and Star Show (rain or shine) at 7:30 PM
  • Telescope Viewing from 8:30 to 10:00 PM
    weather permitting; see our  ClearSky Clock)
  • Please use the 46th Street and Sunset Avenue Entrance to come to the Observatory.  Make a Right at Lilly Hall and the Observatory is at the top of the hill.

Holcomb Observatory and Planetarium has been serving Butler University students and the Indianapolis public for over 60 years. The observatory, one of the largest public observatories in the world, houses a 38-inch Cassegrain reflector in addition to a number of smaller telescopes. It is the ninth largest telescope East of the Mississippi River. The observatory can be visited during our regular public tours listed above or groups can schedule private tours at other times.  Please go to the tours tab to the left for more information.

Come see Saturn and its rings, the Moon, perhaps Uranus and Neptune for your very first time!

During the year of 2015 the main telescope underwent a $400,000 refurbishment by Astronomical Consultants and Equipment.   Though we still have additional testing yet to do in the coming months our greatly improved 38-inch telescope is now back online for public viewing.

ClearSky Clock


"For accessibility information or to request disability-related accommodations, please visit http://www.butler.edu/event-accommodations/. "



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Holcomb Observatory & Planetarium

4600 Sunset Ave.
Indianapolis, IN 46208
(317) 940-8333