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exit pupil

   Also found in: Dictionary/thesaurus, Wikipedia 0.01 sec.
exit pupil [′eg·zət ‚pyü·pəl]
(optics)
The image of the aperture stop of an optical system formed in the image space by rays emanating from a point on the optical axis in the object space.


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Each model in the series features 45mm objective lenses, with larger exit pupils, together with Nikon's advanced Dielectric, high-reflective prism coatings and fully coated optics for improved low-light performance at a weight no greater than many 42mm binos.
Once again using the Santa Catalina mountains and the dome of the LPL 61-inch telescope as a test object, I imaged the relevant section of skyline with my digital camera, first directly, and then with the exit pupil of the telescope centred on the camera lens.
Remote Shutter Cable Specifications: o Size Class: Compact o Focus System: Center o Prism Glass: BK-7 o Lens Coating: Full Coated o Field of View ft: 320'' / 107m o Eye Relief: 15mm o Exit Pupil (mm): 3.
 
 
 
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