STEREO
ray tracing
skiagram
meridional ray
roentgenoscope
nanocraft
telescopical
optical tweezer
shadowgraph
radio-opaque
optodynamics
Hohmann transfer
astronomy satellite
fluoroscope
radiograph
magnetotellurics
kinoform
radiogram
biolasing
raytraced
skiagraph
double refraction
penetrometer
radiable
stimulated emission depletion microscope
Newtonian telescope
telescope
stardrive
Newtonian reflector
mode locking
radio-opacity
orbit
coronograph
ring laser
optic axis
paraorbital
radiopacity
exorbital
hyperbolic sector
telescopic
X-ray
outcouple
astronomical transient
New Horizons
laser beam
optostimulation
telespectroradiometer