Achromatic lens D40 designed for refractive astronomical telescopes manufactured by us, ensuring clear and sharp images. Features an actual diameter of 40mm and a focal length of 205mm, perfect for enhancing your stargazing experience. Covered with a blue adhesive film, this lens minimizes chromatic aberration, providing vibrant, accurate color reproduction. Easy to assemble; just make sure the thin side of the lens faces the stage and the thick side faces the mirror tube for optimal performance. Ideal for amateur astronomers and DIY enthusiasts wishing to build or upgrade their telescope with optical components.
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