Definition of central obstruction

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Photonics Spectra BioPhotonics Vision Spectra Virtual Events & Summits Educational Institutions Add/Update Your Listing Exhibitor Listing Portal Become an Exhibitor Buyers' Guide Print Edition Marketplace Help

Meadowlark Optics - Wave Plates 6/24 LB 2024

Photonics Dictionary

central obstruction: In a reflecting telescope, the obstruction of the primary mirror by a secondary mirror which blocks a small amount of the light reflected by the primary mirror and introduces additional diffraction.

Edmund Optics - Manufacturing Services 8/24 MR

Opto Diode Corp. - Detector Spotlight 10-24 MR

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