| 单词 | optical telescope |
| 释义 | optical telescope (once / 190635 pages) n WORD FAMILY optical telescope: optical telescopes USAGE EXAMPLESThey’re also emitted by “dark” objects — like black holes — that don’t emit light and are therefore difficult to study with optical telescopes. Washington Post(Jun 15, 2016) This would make Planet Nine more easily detectable at infrared wavelengths than through optical telescopes. BBC(Apr 08, 2016) NSF funded adaptive optics research to build optical telescopes with much improved "eyesight." US News(Feb 16, 2016) n an astronomical telescope designed to collect and record light from cosmic sources Hypo|Hyper reflecting telescope, reflector optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece refracting telescopeoptical telescope that has a large convex lens that produces an image that is viewed through the eyepiece Cassegrainian telescope, Gregorian telescopea reflecting telescope that has a paraboloidal primary mirror and a hyperboloidal secondary mirror; light is brought to a focus through an aperture in the center of the primary mirror coude system, coude telescopea reflecting telescope so constructed that the light is led to a plate holder or spectrograph field glass, glass, spyglassa small refracting telescope Galilean telescopea type of refracting telescope that is no longer used in astronomy Herschelian telescope, off-axis reflectora reflecting telescope with the mirror slightly tilted to throw the image to the side where it can be viewed Maksutov telescopereflecting telescope in which the aberration of the concave mirror is reduced by a meniscus lens Newtonian reflector, Newtonian telescopereflecting telescope in which the image is viewed through an eyepiece perpendicular to main axis Schmidt camera, Schmidt telescopereflecting telescope that has plate that corrects for aberration so a wide area of sky can be photographed astronomical telescope any telescope designed to collect and record electromagnetic radiation from cosmic sources |
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