90mm Double Separation Lens for Refractive Astronomical Telescopes-Focal Length Options 500mm/650mm/1000mm (D90F500 Broadband Film)
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Description
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90mm dual separation lens designed for refractive astronomical telescopes, enhancing your stargazing experience. Available in three focal lengths: 500mm, 650mm and 1000mm, allowing versatile applications in astronomical observations. Features optional multi-coated coatings (green or blue film) to improve light transmission and image clarity for better viewing. Precision engineered with tight tolerances: +0/-0.12mm diameter tolerance and ±0.1% focal length tolerance for optimal performance. Includes a complete lens set, ideal for DIY enthusiasts wanting to upgrade or build their own astronomical telescope.
Description
(1)
90mm dual separation lens designed for refractive astronomical telescopes, enhancing your stargazing experience. Available in three focal lengths: 500mm, 650mm and 1000mm, allowing versatile applications in astronomical observations. Features optional multi-coated coatings (green or blue film) to improve light transmission and image clarity for better viewing. Precision engineered with tight tolerances: +0/-0.12mm diameter tolerance and ±0.1% focal length tolerance for optimal performance. Includes a complete lens set, ideal for DIY enthusiasts wanting to upgrade or build their own astronomical telescope.
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