what is a compound telescope
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Compound or catadioptric telescopes are hybrid telescopes that have a mix of refractor and reflector elements in their design. ... The telescope was used primarily for photography, because it had no secondary mirror or eyepieces -- instead, photographic film was placed at the prime focus of the primary mirror.
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Compound or catadioptric telescopes are hybrid telescopes that have a mix of refractor and reflector elements in their design. ... The telescope was used primarily for photography, because it had no secondary mirror or eyepieces -- instead, photographic film was placed at the prime focus of the primary mirror.
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