D80F900 Astronomical Refractor Telescope - Double Separation Achromatic Lens for DIY (D80F900:Single Film Blue Film)

D80 F900 refractor telescope with 80mm aperture and 900mm focal length, perfect for amateur astronomers and DIY enthusiasts. It features a dual separation achromatic lens device, which provides clear and crisp images for an improved viewing experience. The versatile optical system uses refraction to deliver excellent performance in various astronomical observations and experiments. Includes a carefully thought-out lens composition, consisting of two lenses and a spacer, which ensures optimal light transmission and minimal distortion. Ideal for educational purposes, this telescope is perfect for optical experiments and for discovering the universe. (Note: pictures are for reference only, scratches are due to shooting angle and light, not lens defects.)