1pcs Astronomical Telescope Refractor Objective Lens - Double Separation devise for DIY Astronomy Projects(D80F600:multi-layer green film)

D80 F600 refractor objective lens with an 80mm aperture and 600mm focal length, perfect for astronomy enthusiasts and educational purposes. Features a double separation devise with advanced coatings (single layer blue film and multi-layer green film) to enhance light transmission and image clarity. Ideal for DIY astronomical telescope projects, providing excellent optical performance for stargazing and observations. Constructed from two precision lenses and a spacer, ensuring durability and reliability for long-term use in various optical experiments. Compatible with adult astronomical telescopes, making it a versatile accessory for science labs, educational institutions, and hobbyists alike.