90mm Refractive Astronomical Telescope Double Separation Objective Lens - Focal Length Options 500mm/650mm/1000mm(D90F900 Blue Film)
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Description
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90mm diameter double separation objective lens devised for refractive astronomical telescopes. Available focal lengths of 500mm, 650mm, and 1000mm to suit various astronomical viewing needs. Features optional green or blue multi-layer coating for enhanced light transmission and image clarity. Precision-engineered with a diameter tolerance of +0/-0.12mm and focal length tolerance of ±0.1% for optimal performance. Includes one piece of the objective lens, perfect for DIY telescope assembly or upgrading existing equipment.
Description
(1)
90mm diameter double separation objective lens devised for refractive astronomical telescopes. Available focal lengths of 500mm, 650mm, and 1000mm to suit various astronomical viewing needs. Features optional green or blue multi-layer coating for enhanced light transmission and image clarity. Precision-engineered with a diameter tolerance of +0/-0.12mm and focal length tolerance of ±0.1% for optimal performance. Includes one piece of the objective lens, perfect for DIY telescope assembly or upgrading existing equipment.
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