1 x 60mm Green Multi-Layer Double Separation Lens for DIY Astronomical Telescopes Refractors (D60F700)

60mm Dual Separation Multi-layer Lens Specially Designed for DIY Astronomical Telescopes Refractors Different focal lengths available: choose from 300, 360, 400, 500, 600, 700, 800 or 900mm to meet your observation needs. It has a green film coating on all sides for better light transmission and better image clarity, ensuring stunning views. Precision engineered with a strict diameter tolerance of +0/-0.12mm and a focal length tolerance of ±0.1% for optimal performance. Ideal for both astronomical telescope lenses and star finders, it is a perfect complement to the setup of your telescope.