The Barlow lens comes between the eyepiece and the focuser and increases the magnification by a factor of 2.5. It can be used with 1.25" and 2" eyepieces. The Barlow lens consists of four fully multi-coated lenses and provides a flat image with minimal chromatic aberration.
LENGTH: 93mm WIDTH: 64mm WEIGHT: 312g DISTANCE: 2" (51mm) MAGNIFICATION: 2.5x COATING: Fully Multicoated REDUCER: 1.25" (1¼") SPANNING RINGS: On 1.25" and 2" eyepiece mount FREE OPENING: 28mm