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These designs take advantage of all the surfaces being "spherically symmetrical" [5] and were originally invented as modifications of mirror based optical systems (reflecting telescopes) to allow them to have an image plane relatively free of coma or astigmatism so they could be used as astrographic cameras. They work by combining a spherical ...
A refracting telescope (also called a refractor) is a type of optical telescope that uses a lens as its objective to form an image (also referred to a dioptric telescope). The refracting telescope design was originally used in spyglasses and astronomical telescopes but is also used for long-focus camera lenses .
Schmidt corrector plates work because they are aspheric lenses with spherical aberration that is equal to but opposite of the spherical primary mirrors they are placed in front of. They are placed at the center of curvature " C " of the mirrors for a pure Schmidt camera and just behind the prime focus for a Schmidt–Cassegrain .
The refracting telescope which uses lenses to form an image. [27] The reflecting telescope which uses an arrangement of mirrors to form an image. [28] The catadioptric telescope which uses mirrors combined with lenses to form an image. A Fresnel imager is a proposed ultra-lightweight design for a space telescope that uses a Fresnel lens to ...
Maksutov's 1944 design was the first-published meniscus telescope design, and was published in the widely-read Journal of the Optical Society of America. [11] [12] [7] This led to professional and amateur designers almost immediately experimenting with variations, including Newtonian, Cassegrain, and wide-field camera designs.
The cameras and images were produced by the Large Binocular Camera team, led by Emanuele Giallongo at the Rome Astrophysical Observatory. In binocular aperture synthesis mode LBT has a light-collecting area of 111 m 2 , equivalent to a single primary mirror 11.8-meter (39 ft) in diameter, and will combine light to produce the image sharpness ...
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