1pcs D80F500 83mm Green Film Astronomical Telescope Objective Lens - DIY Multi-Layer Coated Achromatic Large Aperture for Binoculars

83mm diameter objective lens devised for astronomical telescopes and binoculars, ensuring clear and bright images. Features a multi-layer broadband green coating that enhances light transmission and reduces glare for improved viewing experiences. Ideal for DIY enthusiasts looking to build or upgrade their own telescopes, guide mirrors, or short focal length astronomical devices. With a focal length of 500mm, this lens provides excellent performance for both amateur and professional astronomy applications. Package includes 1 objective lens, perfect for enhancing your telescope's capabilities and achieving stunning views.