Worlds of David Darling
Encyclopedia of Science
   
Home > Encyclopedia of Science

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