Cassegrainian telescope
Newtonian telescope
OAO
OSO
astronomical observatory
astronomical telescope
coelostat
coronagraph
coronograph
heliostat
observatory
orrery
radar telescope
radio observatory
radio telescope
reflector
refractor
spectrograph
spectroheliograph
spectrohelioscope
spectroscope
telescope
planetaria
building
edifice
optical device
black-light
blue light
catfish
contra-gravity
daguerreotype
fifth-order
flourescent
force-field
holograph
kick-ass
mycogenian
once-bright
onion-shaped
orangutan
shigawire
stained glass
takea
vehicle-mounted
wall-sized
aquarium
barium
herbarium
honorarium