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Product details
- SKU TEL-BLW-2125
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About the TeleVue 2X Barlow - 1.25"...
Properly designed Barlow lenses do wonderful things: They amplify power, slow the telescope''s f/# (improving eyepiece sharpness), and give designers the opportunity to compensate for telescope eyepiece aberrations.
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Tele Vue Barlow Lenses 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 telescope. TeleVue Barlow Lenses even improve our competitor''s telescope eyepieces and telescopes!
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"I originally designed the TeleVue Barlow Lens line to complement the high performance of our TeleVue Telescope Eyepieces. Only 2 elements of high index glass were required to reduce all aberrations to well below the airy disc in an f/4 system. It has taken a good 15 years, but I think we''re finally laying to rest the popular myth of the "degrading Barlow." In a 1997 Sky & Telescope review, Terrence Dickenson wrote "...Technology has erased the old objections. A modern Barlow lens will not degrade your telescope''s optics. Anyone telling you otherwise is using outdated information. Moreover, the highly regarded Nagler TeleVue Telescope Eyepieces and their clones have built-in Barlows - ample evidence that the lens is not some detrimental intruder." Thanks Terry, I couldn''t agree more." --Al Nagler
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Be sure to check out our line of TeleVue Telescopes, TeleVue Telescope Mounts and TeleVue Telescope Accessories. Don''t forget TeleVue Telescope Eyepieces, TeleVue Dioptrx and TeleVue Eyepiece Filters, too!
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TeleVue 2X Barlow - 1.25" Features...
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- Product design and execution deliver consummate satisfaction
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- Features include parfocal-ization, 1.25" filter threads, captive lock screws that won''t fall out and full multicoatings
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- All Tele Vue Barlows now use brass clamp rings for secure, non marring holding of eyepieces and accessories
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- Multi-coated high index glasses for optimum aberration correction, exceptional contrast with virtually no light loss
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- Every Tele Vue Barlow must pass the same rigorous f/4, full field testing as all their eyepieces
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TeleVue 2X Barlow - 1.25" Specifications...
Optics Type: 2X Barlow Lens
Barrel Size: 1.25"
Coatings: Full multi-coatings
Weight: 0.3 lbs.
Parfocal: Yes
Threaded: Yes
Glass Type: High Index
Warranty: Limited Lifetime
TeleVue Product Number: BLW-2125