D70mm Refractive Achromatic Objective Lens for DIY Astronomical Telescope - 400mm, 280mm, 330mm Focal Lengths(73F400 Green Film Turned Black)
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D70mm refractive achromatic objective lens devised for DIY astronomical telescopes. Available in three focal lengths: 400mm, 280mm, and 330mm, catering to various observational needs. Coated with adhesive blue, green, or standard film for enhanced light transmission and image clarity. Easy assembly: ensure the thinner side of the lens faces the object and the thicker side faces the lens tube. Each package contains 1 piece, making it a perfect addition for telescope enthusiasts and DIY projects.
Description
(1)
D70mm refractive achromatic objective lens devised for DIY astronomical telescopes. Available in three focal lengths: 400mm, 280mm, and 330mm, catering to various observational needs. Coated with adhesive blue, green, or standard film for enhanced light transmission and image clarity. Easy assembly: ensure the thinner side of the lens faces the object and the thicker side faces the lens tube. Each package contains 1 piece, making it a perfect addition for telescope enthusiasts and DIY projects.
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