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.
Cassegrain reflector | Optical Telescope, Reflective Optics, …
Cassegrain reflector, in astronomical telescopy, an arrangement of mirrors to focus incoming light at a point close to the main light-gathering mirror. The design was proposed in 1672 by French priest Laurent Cassegrain.
Two-mirror telescopes: Cassegrain, Gregorian and variants
Classical two-mirror arrangements are Gregorian - the very first reflective telescope design, conceived by James Gregory in 1663 - and Cassegrain (FIG. 121), probably introduced in 1672 by Laurent Cassegrain.
The Telescope - HubbleSite
Hubble is a Cassegrain reflector telescope. Light from celestial objects travels down a tube, is collected by a bowl-like, inwardly curved primary mirror and reflected toward a smaller, dome-shaped, outwardly curved secondary mirror.
Hubble Design - NASA Science
Hubble is the first space-based observatory specifically designed for servicing while in orbit. Hubble is classified as a Cassegrain reflector, named after a 15th century French cleric who was among the first to suggest this basic optical design.
Cassegrain Formulas and Tips
The correction of a Cassegrain optical system with an aspheric secondary mirror (classical, R-C) is dependent on the primary-secondary distance. This is because the secondary's conic constant, b is a function of how far it is from the primary mirror and the distance to the focal plane.
Cassegrain Telescope: Classical Design, Advantages, Comparison
2023年10月21日 · The Cassegrain reflector is a type of telescope that uses a combination of a concave primary mirror and a convex secondary mirror to gather and refocus light, producing magnified images of distant celestial objects.
Schmidt-Cassegrain Vs Reflector Telescopes – The Main Differences
In this article, I’ll specifically be going over two of the more well know telescope optics, a Schmidt-Cassegrain telescope and a reflector device so at least by the end of this you’ll have a better idea about which optic suits you best.
Cassegrain reflector - Wikiwand
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.
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....
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