D40 Achromatic Objective Lens for Refractive Astronomical Telescope - 40mm Diameter, 205mm Focal Length,1pcs(40F123 Green Film AR0859)
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Description
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D40 achromatic objective lens devised for self-made refractive astronomical telescopes. Features a 40mm actual diameter and a focal length of 205mm, ensuring clear and sharp images of objects. Coated with an adhesive blue film to enhance light transmission and reduce chromatic aberration for optimal viewing. Easy to assemble; simply position the thin side towards the scene and the thick side towards the mirror tube. Perfect for amateur astronomers looking to enhance their telescope's performance and explore the night sky.
Description
(1)
D40 achromatic objective lens devised for self-made refractive astronomical telescopes. Features a 40mm actual diameter and a focal length of 205mm, ensuring clear and sharp images of objects. Coated with an adhesive blue film to enhance light transmission and reduce chromatic aberration for optimal viewing. Easy to assemble; simply position the thin side towards the scene and the thick side towards the mirror tube. Perfect for amateur astronomers looking to enhance their telescope's performance and explore the night sky.
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