optical telescope, telescope, epsilon aurigae, astron, polarimetry, retroreflector, coronagraph, interferometer, deimos, airglow, grond, earthshine, eclipsing binary, photometer, zodiacal light, radial velocity, refracting telescope, extragalactic, observatories, astrometry, spectroscopic, geoid, osiris, bolometer, nicolaus copernicus, tycho brahe, ornithopter, photometry, sciamachy, raman effect, spectroscopic analysis, spectrographic, electron accelerator, blackbody, heliostat, astronomers, selene, synchrotron radiation, spectro, photoelectric effect, spectrometers, syrtis major, noctilucent, gradiometer, monochromator, cbers, parabolic mirror, geodesy, multispectral, celestial mechanics, attosecond, christiaan huygens, horsehead nebula, galileo galilei, smos, occultation, photometric, themis, hipparchus, quasicrystal, altimetry, photoelectron, navstar, collinear, lutetia, hubble, zeiss, celestial sphere, dixi, phyllosilicate, ostracods, omega centauri, convex lens, armillary sphere, spacecraft, geodetic, thermal emission, proxima centauri, astronomie, jovian, camera obscura, imager, radiometer, cassini, astrophotography, small magellanic cloud, harlow shapley, circumlunar, manganite, tokamak, johannes kepler, azimuthal, holography, geodynamic, geomagnetism, scintillator, geosynchronous, arrays, photoluminescence, polyphase, large magellanic cloud, archaeo

optical telescope, radio reflector, radio telescope

scope, telescope