90mm Refractive Astronomical Telescope Double Separation Objective Lens(D90F900 Blue Film)
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Description
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90mm diameter double separation objective lens devised for refractive astronomical telescopes. Available in three focal lengths: 500mm, 650mm, and 1000mm, allowing for versatile astronomical observations. Features optional coatings in green or blue film to enhance image clarity and brightness. Precision-engineered with a diameter tolerance of +0/-0.12mm and focal length tolerance of ±0.1% for optimal performance. Includes one piece of lens, perfect for both objective and collimating applications in astronomy.
Description
(1)
90mm diameter double separation objective lens devised for refractive astronomical telescopes. Available in three focal lengths: 500mm, 650mm, and 1000mm, allowing for versatile astronomical observations. Features optional coatings in green or blue film to enhance image clarity and brightness. Precision-engineered with a diameter tolerance of +0/-0.12mm and focal length tolerance of ±0.1% for optimal performance. Includes one piece of lens, perfect for both objective and collimating applications in astronomy.
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