D70mm Refractive Achromatic Objective Lens for DIY Astronomical Telescope - 400mm Focal Length, Blue Coating(73F400 Green Film Turned Black)
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D70mm refractive achromatic objective lens devised for DIY astronomical telescopes, ensuring clear and sharp images. Available in various focal lengths: 400mm with adhesive blue film, 280mm with adhesive green film, and 330mm with adhesive film for versatile applications. Actual diameter of 73mm, optimized for telescope assembly to enhance your stargazing experience. Easy to assemble: The thinner side of the lens should face the object, while the thicker side should face the lens tube for optimal performance. Each package includes 1 piece, making it a perfect choice for telescope enthusiasts looking to upgrade their optics.
Description
(1)
D70mm refractive achromatic objective lens devised for DIY astronomical telescopes, ensuring clear and sharp images. Available in various focal lengths: 400mm with adhesive blue film, 280mm with adhesive green film, and 330mm with adhesive film for versatile applications. Actual diameter of 73mm, optimized for telescope assembly to enhance your stargazing experience. Easy to assemble: The thinner side of the lens should face the object, while the thicker side should face the lens tube for optimal performance. Each package includes 1 piece, making it a perfect choice for telescope enthusiasts looking to upgrade their optics.
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