Cassegrainian telescope
Newtonian telescope
OAO
OSO
astronomical observatory
astronomical telescope
coelostat
coronagraph
coronograph
heliostat
observatory
orrery
planetarium
radar telescope
radio observatory
radio telescope
reflector
refractor
spectrogram
spectroheliogram
spectroheliograph
spectrohelioscope
spectroscope
telescope
Lackawanna
Worcester
appearsto
armhole
dark-rimmed
fluence
gill-like
helpless-looking
iantivirus
inch-wide
interferometers
interferometry
lengthwise
lipless
proofed
quarter-inch
ruby-colored
spick
thigh-high
thigh-length
weasand
épée