parabolic mirror

retroreflector, antenna, photodiode, bimetal, photocell, parabolic reflector, dipole antenna, parabolic mirror, gnomon, busbar, convex lens, radome, diffraction grating, photometer, phototransistor, monochromator, collimator, reflectivity, interferometer, emissivity, microbalance, detector, waveguide, volute, radiometer, photodetector, wind vane, yagi, heliostat, trunnion, illuminance, collimating, directional antenna, refractor, imager, microswitch, infrared, pyrometer, coronagraph, baseplate, klystron, infrared ray, handwheel, coupler, illumination, headlamp, gimbals, nosepiece, bolometer, variable resistor, scintillator, bimini, toroid, monopod, beams, gearset, waveband, pintle, newtonian telescope, photodiodes, diffracting, tailstock, dipole, fresnel, fresnel lens, tachymeter, iris diaphragm, demister, deflector, photometry, transmitter, polarimeter, gratings, actuator, goniometer, gooseneck, corrector, sinusoid, gaussian, attenuator, circular polarization, florescent, demagnetization, inertial navigation, retarder, flashgun, arcsecond, radii, sheave, absorber, crystal oscillator, pentaprism, wavefront, electroluminescent, potentiometer, spectrometer, dipole moment, thermocouple, arresters, sidewall, photomultipliers, inclinometer, reflectors, radiator, emitter, telescope, mirrors, diffuser, mirror, mixer, radiators, baffle, burner, concentrator, scatterer, aerial, magnet, strainer, wedge, absorbers, electrode, multielement, anode, coaxial, nozzle, amplifier, filament, sensor, cavity, cylinder, diaphragm, exchanger, filter, grating, rectifier, toroidal, coil, condenser

cassegrainian telescope, coude system, coude telescope, gregorian telescope, herschelian telescope, maksutov telescope, newtonian reflector, paraboloid reflector, schmidt camera, schmidt telescope

dish, dish aerial, dish antenna, headlamp, headlight, parabolic mirror, parabolic reflector, paraboloid reflector, saucer

device, optical telescope

reflecting telescope