90mm Refractive Astronomical Telescope, Dual Separation Lens - Focal Length: 500/900/1000mm (D90F1000 Blue Film)
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Description
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Designed for astronomical telescopes, this 90mm dual separation lens provides exceptional clarity and detail for stargazing enthusiasts. Available in three focal lengths: 500mm, 900mm and 1000mm, allowing versatile use in various astronomical observations. Featuring multi-coated coatings (green or blue film) that improve light transmission and reduce reflections, resulting in brighter and sharper images. Precisely engineered with a diameter tolerance of +0/-0.12mm and ±0.1% focal length tolerance, ensuring consistent performance and. Includes two groups of double-separated refractive lenses for optimal collimation and image, making it ideal for amateur and professional astronomers.
Description
(1)
Designed for astronomical telescopes, this 90mm dual separation lens provides exceptional clarity and detail for stargazing enthusiasts. Available in three focal lengths: 500mm, 900mm and 1000mm, allowing versatile use in various astronomical observations. Featuring multi-coated coatings (green or blue film) that improve light transmission and reduce reflections, resulting in brighter and sharper images. Precisely engineered with a diameter tolerance of +0/-0.12mm and ±0.1% focal length tolerance, ensuring consistent performance and. Includes two groups of double-separated refractive lenses for optimal collimation and image, making it ideal for amateur and professional astronomers.
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