a 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.
具有抛物面主镜和双曲面次镜的一种折射式望远镜；光线被集中到主镜中心的孔径。
a reflecting telescope so constructed that the light is led to a plate holder or spectrograph.
构造成光线被引入盘状容器或光谱摄制仪的折射式望远镜。
elbow refractor
折轴反光望远镜;折轴折射望远镜;曲折折光计
domeless solar refractor
无圆顶太阳折射望远镜
Light also bends when it reaches the lens of a telescope.
光投射到望远镜的镜头时也会折射的。
objective (incl. polarizing) for astronomical instruments, binoculars, refracting telescopes microscopes
天文仪器、双筒镜、折射望远镜、显微镜物镜（包括偏振的）
A three-inch refractor will give an excellent view.
一架三英寸的折射望远镜就能看到极好的景象。
The lens telescope, or refractor, was vastly improved when it became possible to manufacture high-quality lenses made from flint glass.
透镜望远镜，或称折射望远镜，在人们能够制造出高质量的火石玻璃透镜以后得到了很大的改进。
periscope binoculars
潜望镜式双筒望远镜
The optical system of a refracting telescope is essentially the same as that of a compound microscope.
折射望远镜的光学系统与复显微镜的光学系统基本上相同。
a type of refracting telescope that is no longer used in astronomy.
在天文学上不再使用的一种折光式望远镜。
a reflecting telescope with an off-axis reflector.
带有远轴反射镜的反射望远镜。
prismatic binoculars
棱镜式双目望远镜.
Most of us are familiar with positive-index lenses- in cameras, magnifying glasses, microscopes and telescopes.
大多数人熟悉的是具有正折射率的透镜，常见于照相机、大镜、微镜及望远镜之中。
Schmidt-type optical system
施密特反射望远镜系统
radio telescope with fixed spherical reflector
固定球面射电望远镜
filled aperture radio telescope
连续孔径射电望远镜
aperture synthesis radiotelescope
综合孔径射电望远镜