Synonyms:
- Cassegrainian telescope,
- Newtonian telescope,
- OAO,
- OSO,
- astronomical observatory,
- astronomical telescope,
- coelostat,
- coronagraph,
- coronograph,
- heliostat,
- observatory,
- orrery,
- planetarium,
- radar telescope,
- radio observatory,
- radio telescope,
- reflector,
- spectrograph,
- spectroheliograph,
- spectrohelioscope,
- spectroscope,
- telescope