What is the Cassegrain telescope used for?
This telescope was invented by a Frenchman named Nicolas Cassegrain. Cassegrain designs are also used in the construction of satellite communication systems, such as earth stations and radio telescopes.
What is the magnification of Cassegrain telescope?
Common sense seems to indicate that, for the 12.5″ F/12.5 Cass, with an F/4.2 primary and a secondary magnification of 12.5/4.2 = 3, moving the secondary 0.01″ toward the primary should move the focal plane back 0.01″ * 3 = 0.03″.
What type of telescope is a Cassegrain telescope?
reflecting telescope
The Cassegrain telescope is a type of reflecting telescope which employs a combination of a primary concave mirror and a secondary convex mirror into its design. In the classic Cassegrain telescope, a parabolic primary mirror has a hole placed in its center.
Where are Catadioptric telescopes used?
The catadioptric Astrograph is a telescope designed for doing astrophotography rather than visual observing. In amateur astronomy Astrographs are used mostly for obtaining images of various objects, but they also have been used for doing sky surveys as well as searching for comets or asteroids.
What is the difference between a Cassegrain and a Schmidt Cassegrain telescope?
The main difference between Schmidt-Cassegrains and Maksutov-Cassegrains is the corrector lens at the front of the telescope. Both scopes use spherical mirrors which induce spherical aberration.
Which is better Schmidt-Cassegrain or Maksutov-Cassegrain?
In short, a Maksutov-cassegrain telescope is generally better for planet viewing due to the narrow and generally large focal ratios, however this also does compromise the astrophotography performance of Mak telescopes, which is an area Schmidt-Cassegrain telescopes don’t suffer nearly as much from whilst still having …
Is Cassegrain telescope better than Newtonian?
Newtonians are better for viewing deep space objects. Maksutov-Cassegrains are better for observing planets and the Moon. Newtonians are better backyard telescopes.
What is the difference between Maksutov-Cassegrain and Schmidt-Cassegrain?
What’s The Difference Between A Maksutov-Cassegrain And Schmidt-Cassegrain Telescope? The main difference between a Mak and SCT design is the corrector lens placed in front of each of these devices. The reason for the corrector lenses in both systems is so that aberration can be eliminated when light passes through.
What is an Argunov-Cassegrain telescope?
The Argunov-Cassegrain telescope is another modified type of the Cassegrain telescope. In this telescopic design, all the optical instruments are spherical. The secondary mirror of the classical Cassegrain telescope is substituted by the sub-aperture corrector in this telescopic design that uses three air-spaced lens elements.
What is the difference between Maksutov and Cassegrain telescope?
The Maksutov-Cassegrain is a Maksutov telescope variant. It is baptized after the famous Russian astronomer and optician Dmitri Dmitrievich Maksutov. This design has an optically transparent corrector lens, a section of a hollow sphere in the beginning. The Argunov-Cassegrain telescope is another modified type of the Cassegrain telescope.
How does a Cassegrain telescope work?
A Cassegrain telescope (proposed by Laurent Cassegrain in 1672) uses a primary parabolic mirror and a secondary hyperbolic mirror to reflect the light to the primary through a hole. The secondary mirror produces a diverging and folding effect creating a telescope having a short tube length with a long focal length.
What is the Klevtsov-Cassegrain telescope?
The Klevtsov-Cassegrain is similar to the Argunov-Cassegrain telescope. It is built of a sub-aperture corrector, a small meniscus lens, and a Mangin mirror that acts as a secondary mirror.