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TELESCOPE EQUIPMENT
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star diagonal



A gadget resembling a plumbing elbow fitting, containing a mirror or prism, attached to a downward-pointing focuser to redirect the beam of light upward for more convenient viewing through a telescope. That is, a star diagonal fits into a focuser, has an eyepiece fitted into it, and bends the light path through a right angle.


Related category

   • TELESCOPE EQUIPMENT AND TECHNIQUES


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Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History



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