1Pcs D40 Achromatic Objective Lens 40mm Diameter, 205mm Focal Length, Adhesive Blue Film(42F132 Green Film)
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Description
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Achromatic objective lens devised for self-made refractive astronomical telescopes, ensuring clear and sharp images. Features a 40mm actual diameter and a focal length of 205mm, ideal for amateur astronomers looking to enhance their viewing experience. Coated with an adhesive blue film that minimizes reflections and improves light transmission for optimal performance. Easy to assemble with clear instructions; simply position the thin side of the lens towards the scene and the thick side towards the mirror tube. Perfect for DIY enthusiasts and astronomy lovers, this lens is a must-have accessory for building custom telescopes.
Description
(1)
Achromatic objective lens devised for self-made refractive astronomical telescopes, ensuring clear and sharp images. Features a 40mm actual diameter and a focal length of 205mm, ideal for amateur astronomers looking to enhance their viewing experience. Coated with an adhesive blue film that minimizes reflections and improves light transmission for optimal performance. Easy to assemble with clear instructions; simply position the thin side of the lens towards the scene and the thick side towards the mirror tube. Perfect for DIY enthusiasts and astronomy lovers, this lens is a must-have accessory for building custom telescopes.
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