90mm Double Separation Lens for Refractive Astronomical Telescopes-Focal Length Options 500mm/650mm/1000mm (D90F900 Blue Film)
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Description
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Dual separation lens designed for refractive astronomical telescopes, enhancing your stargazing experience. Available in multiple focal lengths (500mm, 650mm, 1000mm) to meet various observation needs and preferences. Precision-built, with a diameter tolerance of +0/-0.12mm and ±0.1% focal length tolerance for optimal performance. Coated with optional green or blue multilayer broadband film to improve light transmission and image clarity. The package includes a 90mm lens, perfect for DIY telescope assembly and upgrades for astronomy enthusiasts.
Description
(1)
Dual separation lens designed for refractive astronomical telescopes, enhancing your stargazing experience. Available in multiple focal lengths (500mm, 650mm, 1000mm) to meet various observation needs and preferences. Precision-built, with a diameter tolerance of +0/-0.12mm and ±0.1% focal length tolerance for optimal performance. Coated with optional green or blue multilayer broadband film to improve light transmission and image clarity. The package includes a 90mm lens, perfect for DIY telescope assembly and upgrades for astronomy enthusiasts.
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