catadioptrics


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catadioptrics

the study of the reflection and refraction of light. — catadioptric, catadioptrical, adj.
See also: Light
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Diffraction from the vanes of a Newtonian reflector's secondary mirror support can be a troublesome source of scattered light, so refractors and catadioptrics are the preferred weapons of choice.
The design also avoids the long cooldown times associated with closed-tube catadioptrics. The telescope comes with a 7 x 50 finderscope, 2-inch focuser, and dovetail plate compatible with any Vixen or similar mounts.
Meade should have found a completely new name for its RCX400 and LX200R catadioptrics rather than continue to play fast and loose with venerated optical terms.
In the early 20th century, Bernhard Schmidt and Dmitri Maksutov invented catadioptrics, or compound telescopes, which use mirrors to gather the light but also include specialized corrector plates in front.
I'm confident that this same mount will work effectively with small catadioptrics and even with small Newtonians.
A scope's focal length is shown either on the metal ring surrounding the front lens of a refractor and some catadioptrics (lower left), on a small plaque located on the scope's barrel or focuser (left), or in the often-overlooked user's manual.
Apochromatic refractors, computer-slewed catadioptrics, and even a few collectibles with names like Quantum and Clark line our living rooms and home observatories.
Reflectors are grouped on the left; catadioptrics, such as Schmidt-Cassegrains and Maksutovs, are in the middle; and refracting telescopes are to the right.
Despite their varied appearances, all scopes can be divided into three distinct classes: refractors (those that use lenses), reflectors (those that employ mirrors), and catadioptrics (hybrids of the two).
Unlike at Stellafane, where commercial sales and displays are prohibited, at Riverside commercial exhibitors turn out in droves to display their wares - from enormous catadioptrics to tektites and astronomical trinkets.
Yet for all their varied shapes and sizes, telescopes can be divided into three distinct classes: refractors, reflectors, and catadioptrics.