Holcomb Observatory and Planetarium

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

Holcomb Observatory is closed during the month of August and will re-open in mid September.  Please look for updates on this website.

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

  • Doors open at 8:00 PM
  • Planetarium and Star Show at 8:30 PM
  • Telescope Viewing from 9:30 to 11:00 PM
    weather permitting; see our  ClearSky Clock)

Holcomb Observatory and Planetarium has been serving Butler University students and the Indianapolis public for 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 right for more information.

Come see Jupiter and its Galilean moons, Saturn and its rings, and Venus for your very first time!

During the early part of 2015 the main telescope will be undergoing a $325,000 refurbishment by Astronomical Consultants and Equipment.  The construction is now in its final phase with reassembly of the telescope occuring during April. We will still continue to have telescope viewing and planetarium shows as usual.   A portable computer controlled telescope will be used for viewing the planets, Moon, and stars.  This telescope gives us great views of the planets. We are looking forward to having our greatly improved main 38-inch telescope back online in mid 2015.  See the tab to the lower left for more information about the upgrades.


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