Cassegrain reflector - Wikipedia
A Cassegrain telescope uses two mirrors as shown in the above figure. Such a telescope is built with the mirrors $20mm$ apart. If the radius of curvature of the large mirror is
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In a reflecting telescope (Cassegrain), is there a difference between using a concave or convex secondary mirror? - Astronomy Stack Exchange
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In a Cassegrain telescope, which of the following mirrors is used as the secondary mirror?
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Cassegrain reflecting telescope, 1762-1774 | Science Museum Group Collection
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Cassegrain reflector - Wikipedia
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Cassegrain Telescope, Types of Telescopes Part 3 | OPT Telescopes
Which of the following optical instruments are used in a Cassegrain telescope?
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Maksutov-Cassegrain vs Newtonian Telescopes. Which One Is Best?
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Schmidt–Cassegrain telescope - Wikipedia
