Cassegrain Telescope: Classical Design, Advantages, Comparison
2023年10月21日 · How Does a Cassegrain Telescope Work? The Cassegrain reflector works using a primary concave mirror to collect and redirect incoming light toward the secondary mirror, and a secondary convex mirror to further concentrate that light and direct it to the eyepiece. The light-gathering process begins when light enters the telescope through its ...
卡塞格林望远镜 - 百度百科
卡塞格林望远镜的设计是以 伯恩哈德·施密特 的摄星仪为基础，一如施密特摄星仪使用 球面镜 做主镜，并以修正板来改正 球面像差；承袭卡塞格林的设计，以 凸面镜 做 次镜，将光线反射穿过 主镜 中心的孔洞，汇聚在主镜后方的 焦平面 上。 有些设计会在焦平面的附近增加其他的光学元件，例如平场镜。 美国制Celestron星特朗C9.25卡塞格林式望远镜它有许多的变形（双 球面镜 、双 非球面镜 、或球面镜与非球面镜各一），可以被区分为两种主要的设计形式：紧密的和非紧密的 …
Cassegrain reflector - Wikipedia
The Cassegrain reflector is a combination of a primary concave mirror and a secondary convex mirror, often used in optical telescopes and radio antennas, the main characteristic being that the optical path folds back onto itself, relative to the optical system's primary mirror entrance aperture.
ATM: 12.5" Open-tubed Classical Cassegrain - Amateur Telescope …
2005年7月26日 · After a lesson in the equations that define the design of a Cassegrain telescope, I wrote a short, simple computer program to calculate several designs with different focal ratios.
There are not many amateur telescope makers (ATM) today who build Cassegrain telescopes. However, there are interesting features of this design that makes it well worth investing the effort and money to build such an instrument.
The FrankenScope: How To Build Your Own Schmidt-Cassegrain …
2024年12月3日 · Donald Lynn’s completed and mounted Schmidt-Cassegrain “FrankenScope.” Image: Donald Lynn. The major manufacturers of Schmidt-Cassegrains make their optics near perfect by the final figuring of the secondary mirror. This counteracts any substantial imperfections in any of the optical components (corrector lens, primary mirror, or secondary mirror).
Cassegrain - an overview | ScienceDirect Topics
The basic type of this design has practically dominated the construction of the classical large astronomical telescopes with M1 diameters of up to 5 m, and, more recently, the modern 8–10 m class telescopes.
Classical Cassegrain Design - Starizona
2020年2月29日 · This section details the optical design and inherent aberrations of Cassegrain-type reflecting telescopes. For a more basic overview of these designs please see the Ritchey-Chrétien page and the Cassegrain page.
So why aren't these superior telescopes not the default choice for all Schmidt-Cassegrains? It all boils down to the perception and needs of the typical observer, as well as what most people are prepared to pay. The spherical-mirror S-Cs have an excellent on-axis image and few visual observers will ever detect the difference.
Cassegrain Telescope - Definition and Applications - AZoOptics
The Cassegrain telescope is an astronomical reflecting telescope, in which the light is incident on a large concave paraboloid mirror, and reflected onto a smaller convex hyperboloid mirror.