D70mm Achromatic Objective Lens for DIY Astronomical Telescope - 400mm Focal Length with Adhesive Blue Film(72F700 Single-Sided Green Film)
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D70mm achromatic objective lens devised for DIY astronomical telescopes, ensuring clear and sharp images. Available in multiple focal lengths: 400mm with adhesive blue film, 280mm with adhesive green film, and 330mm with standard adhesive film. Actual diameter of 73mm, providing a perfect fit for various telescope models and enhancing your stargazing experience. Easy assembly with clear instructions: thin side of the lens faces the object, while the thick side faces the lens tube for optimal performance. 1 piece per package, ideal for hobbyists and professionals looking to upgrade or build their own telescope for astronomical observations.
Description
(1)
D70mm achromatic objective lens devised for DIY astronomical telescopes, ensuring clear and sharp images. Available in multiple focal lengths: 400mm with adhesive blue film, 280mm with adhesive green film, and 330mm with standard adhesive film. Actual diameter of 73mm, providing a perfect fit for various telescope models and enhancing your stargazing experience. Easy assembly with clear instructions: thin side of the lens faces the object, while the thick side faces the lens tube for optimal performance. 1 piece per package, ideal for hobbyists and professionals looking to upgrade or build their own telescope for astronomical observations.
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