SV216 3X Barlow Lens offers sharp, bright images with multi-coated elements and edge-blackened lenses to reduce light scatter. It controls aberrations for a flatter view and maintains eye relief, ideal for eyeglass wearers. SV216 3X Barlow Lens transforms your telescope into a high-powered explorer, suitable for planetary observation, reveals intricate cloud bands on Jupiter, rings of Saturn, cratered terrain of the Moon in crisp, turning every stargazing session into a profound celestial encounter. The SV216 Barlow lens adopts a 4-piece telecentric design; which effectively prolongs the focal length of the primary mirror without introducing chromatic aberration and vignetting problems that bother users; offers excellent spherical aberration control; resulting in a flatter field of view than standard Barlow lens The magnification of the SV216 Barlow lens is constant at 2 times; the 4-piece design of the Barlow lens and the optimized optical structure ensure that the magnification factor of the Barlow lens remains unchanged no matter where the Barlow lens is installed in the optical system.