D40 Achromatic Lens for Refractive Astronomical Telescope - 40mm Diameter, 205mm Focal Length, Pack of 1 (42F132 Green Film)
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Description
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Achromatic D40 objective lens for DIY refractive astronomical telescopes. It has an actual diameter of 40mm and a focal length of 205mm, ensuring clear and sharp images of objects. Coated with a self-adhesive blue film to improve light transmission and reduce chromatic aberration for optimal visibility. Easy to install; easily position the thin side to the scene and the thick side for mirror tube. Perfect for amateur astronomers who want to improve the performance of their telescope and explore the night sky.
Description
(1)
Achromatic D40 objective lens for DIY refractive astronomical telescopes. It has an actual diameter of 40mm and a focal length of 205mm, ensuring clear and sharp images of objects. Coated with a self-adhesive blue film to improve light transmission and reduce chromatic aberration for optimal visibility. Easy to install; easily position the thin side to the scene and the thick side for mirror tube. Perfect for amateur astronomers who want to improve the performance of their telescope and explore the night sky.
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