Observatory dome at the tower's top: 10-inch refractor
History: - 1961: first dome
- 1977: 9.14m/95seats, Viewlex/Minolta S-IIB
- 2008: Fulldome
- 2012: closed for works
- October 31, 2014: same dome, new building (Challenger Learning Center, Digistar 4 + Observatory) - Early 2016: upgrade ($850,000)