Definition of Huygens eyepiece in English:
A simple eyepiece consisting of two separate planoconvex lenses, used chiefly in refracting telescopes of long focal length.
- The Ramsden eyepiece is essentially a Huygens eyepiece with the bottom lens element reversed.
- This is a variation on the Huygens eyepiece, and has a two piece achromatised eye lens.
- The binocular or optional trinocular viewing head is equipped with several Huygens eyepieces and can be rotated to any position and secured with a lock screw.
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