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Third Lens Element Virtually Eliminates "Chromatic Aberration"
Product Description

1.25" 2x Orion Ultrascopic 3-Element Barlow Lens
* A premium-quality barlow lens which doubles the power of any 1.25 inch eyepiece
* Renders images of ultra-high fidelity and superb color correction
* Employs a 3-element, fully multi-coated lens system with a clear aperture of 27mm
* One-year limited warranty
Besides doubling the power of any eyepiece, these premium-quality barlows feature 3-element, fully multi-coated lens designs that render exquisite images without introducing additional chromatic aberration. Images appear sharper and more color-correct than with standard, achromatic barlows. They're especially good for high-power lunar and planetary observing and for boosting magnification in short-focal-length telescopes. Barrels are not threaded for filters.