Holcomb Observatory is open for
public tours on April 24th and 25th. We will be
closed for public tours from 4/26 - 5/23 for Summer
Break. Public tours will resume beginning 5/29.
No reservations are needed for Public tours (Friday &
Saturday evenings). For Private tours and
planetarium shows please email us or
- Doors open at 8:00
- Planetarium and Star Show at 8:30
Viewing from 9:30 to 11:00 PM
(weather permitting; see
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
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
$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
accessibility information or to request disability-related
accommodations, please visit