Bresser 3x Achromatic Barlow Lens allows increasing the effective focal length of the telescope 3 times and getting maximum magnification when observing the Moon and planets! It also reduces image distortion to a minimum.
The lens is made of high-quality optical glass with multi-layer coating that reduces the loss of light to a minimum and provides maximum brightness and contrast of the
resulting image. It is designed for use with standard 1.25" eyepieces.
Optical design: achromatic
Magnification, x: 3
Barrel diameter: 1.25"