refractor Definition

apochromatic, eyepiece, telescope, newtonian telescope, reflector, collimator, photometer, astronomical telescope, spectroscope, spherical aberration, photometry, infrared, loupe, monochromator, arcsecond, iris diaphragm, retroreflector, coronagraph, polarimeter, eclipsing binary, diffractometer, lenses, convex lens, galvanometer, imager, colorimeter, magnifications, photoluminescence, fresnel, emissivity, josephson junction, collimating, bolometer, ophthalmoscope, microspectrophotometer, leica, refracting telescope, galilean telescope, wavefront, photomultipliers, micrograph, photodetector, scintillator, enlarger, pyrometer, goniometer, epsilon aurigae, sundog, zeiss, multispectral, absorption coefficient, photocells, chemiluminescence, cepheid variable, inclinometer, pinhole, spectro, optics, phototransistor, floor lamp, airglow, spectrographic, illuminance, deimos, binocular microscope, microbalance, diffraction grating, spectrophotometry, toric lens, horsehead nebula, penlight, cuvette, photolithographic, autofluorescence, flashgun, photoelectron, aperture, maksutov telescope, tauri, photomultiplier, stereographic, interferometer, toroid, luminosities, zoom lens, micrometre, spectrometer, bimetal, fisheye, subminiature, smoky quartz, celestial sphere, photodiodes, luminescence, watchcase, fluorescent dye, photogram, condenser microphone, lyrae, reflectometer,