Cassegrainian telescope
Newtonian telescope
OAO
OSO
abbreviate
abridge
abstract
astronomical observatory
astronomical telescope
binoculars
bob
boil down
capsulize
clip
coelostat
compress
concertina
condense
contract
coronagraph
coronograph
crop
crush
curtail
cut
cut back
cut down
cut off short
cut short
digest
dock
elide
epitomize
equatorial
field glass
finder
foreshorten
glass
heliostat
mow
nip
observatory
opera glasses
orrery
photohelioscope
planetarium
poll
pollard
precis
concentrate
mash
squash
squeeze
squelch
telescoped
telescopes
telescoping
antenna
apparatus
camera
cannon
compass
detector
gear
instrument
lantern
laser
lens
map
microscope
mirror
radar
radio-
receiver
reflector
satellite
transmitter
tube