1 x 60mm Green Multi-Layer Double Separation Lens for DIY Refractor Astronomical Telescope(D60F300)

60mm Dual Separation Multi-layer Lens designed for DIY refractor astronomical telescopes, to enhance the star-watching experience. Versatile focal lengths available (300mm to 900mm) to adapt to various telescope configurations, providing flexibility for amateur astronomers. The green film coating on all sides ensures optimal light transmission and image clarity, delivering superior image quality with a combined rating of 1/4-1/8. Precision engineered and strict tolerances (+0/-0.12mm diameter, ±0.2mm core thickness) for reliable performance and easy installation. Includes two sets of double separation lenses for refraction that are perfect for both astronomical telescope lenses and star seekers, making it the ideal choice for enthusiasts.