D40 Achromatic Objective Lens - 40mm Diameter, 205mm Focal Length, Blue Film Coated,1pcs(42F143 Green Film)
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Description
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Achromatic objective lens devised for self-made refractive astronomical telescopes. Features an actual diameter of 40mm and a focal length of 205mm for enhanced viewing experience. Coated with adhesive blue film to minimize chromatic aberration and improve image clarity. Easy to assemble; ensure the thin side of the lens faces the scene for optimal performance. Perfect for astronomy enthusiasts looking to build or upgrade their own telescope setup.
Description
(1)
Achromatic objective lens devised for self-made refractive astronomical telescopes. Features an actual diameter of 40mm and a focal length of 205mm for enhanced viewing experience. Coated with adhesive blue film to minimize chromatic aberration and improve image clarity. Easy to assemble; ensure the thin side of the lens faces the scene for optimal performance. Perfect for astronomy enthusiasts looking to build or upgrade their own telescope setup.
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