1 Piece D70mm Achromatic Objective Lens for DIY Astronomic Telescope - Focal Length Options 400mm, 280mm, 330mm (72F700 Single-Sided Green Film)
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Description
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Achromatic D70mm lens designed for lovers of self-made astronomical telescopes. Available in three focal lengths: 400mm (blue film), 280mm (green film) and 330mm (red film) for versatile viewing options. Each lens has an actual diameter of 73 mm and is coated with an adhesive film for easy installation and optimal performance. Assembly is straightforward: make sure the thinner side of the lens points for object, while the thicker side for lens tube points to ensure proper alignment. This lens is perfect for enhancing your stargazing experience, and is suitable for both beginners and experienced astronomers who want to build or upgrade their telescope.
Description
(1)
Achromatic D70mm lens designed for lovers of self-made astronomical telescopes. Available in three focal lengths: 400mm (blue film), 280mm (green film) and 330mm (red film) for versatile viewing options. Each lens has an actual diameter of 73 mm and is coated with an adhesive film for easy installation and optimal performance. Assembly is straightforward: make sure the thinner side of the lens points for object, while the thicker side for lens tube points to ensure proper alignment. This lens is perfect for enhancing your stargazing experience, and is suitable for both beginners and experienced astronomers who want to build or upgrade their telescope.
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