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TeleVue 3x Barlow Lens 1-1/4 Inch
Tele Vue 3x Barlow 1-1/4 InchOffered in 2x and 3x magnifications these 1? Barlows perform identically. Simply choose either or both based on your eyepiece collection. Features include parfocal-ization 1? filter threads captive lock screws that won't fall out and full multicoatings.Properly designed Barlows do wonderful things: They amplify power slow the telescope's f/# (improving eyepiece sharpness) and give designers the opportunity to compensate for eyepiece aberrations. Tele Vue Barlows use multi-coated high index glasses for optimum aberration correction exceptional contrast with virtually no light loss. Observed performance is aberration free even when tested with f/4 scopes. They even improve our competitor's eyepieces and telescopes!Compromise image quality in any part of the optical chain and you've compromised every part! Tele Vue product design and execution deliver consummate satisfaction. Every Tele Vue Barlow must pass the same rigorous f/4 full field testing as all our eyepieces. All Tele Vue Barlows now use brass clamp rings for secure non marring holding of eyepieces and accessories.
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