90mm Double Spacing Objective Lens for Refractive Astronomical Telescopes - Focal Length Options 500mm/650mm/1000mm(D90F900 Blue Film)
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90mm double separation objective 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-layer coatings (green or blue film) to improve light transmission and image clarity for better viewing. PRECISION ENGINEERED TO STRICT Tolerances - +0/-0.12mm diameter tolerance and ±0.1% focal length tolerance for optimal performance. Includes a complete lens set, ideal for DIY enthusiasts looking to upgrade or build their own astronomical telescope.
Description
(1)
90mm double separation objective 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-layer coatings (green or blue film) to improve light transmission and image clarity for better viewing. PRECISION ENGINEERED TO STRICT Tolerances - +0/-0.12mm diameter tolerance and ±0.1% focal length tolerance for optimal performance. Includes a complete lens set, ideal for DIY enthusiasts looking to upgrade or build their own astronomical telescope.
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