ITEM NAME:2X Lens Telescope Magnifying Eyepiece Professional Telescope Mirror 1.25 In U7B7 2X Lens Telescope Magnifying Eyepiece Professional Telescope Mirror 1.25 In U7B7 Double the magnification of each eyepiece you own with the 2X Lens. Keep the eye relief of your eyepieces while getting 2X the power. Slides into 1.25 inch focusers and diagonals and accepts 1.25 inch eyepieces. Fully multi-coated optics with blackened edges for good light transmission and minimal reflections. Eye relief is the distance your eye has to be from the first lens in the eyepiece in order to see the full field of view. When you use a Barlow lens with an eyepiece, you get double the magnification, but the eye relief is not affected This is a good thing, because normally the shorter the focal length of the eyepiece, the less eye relief you have. In other words, a standard 10mm eyepiece, as a general rule, will have better eye relief than a 5mm eyepiece. Bonus ! The two-element optics are fully multi-coated, and the edges of the lenses are blackened to cut down on internal reflections. The 1.25 inch barrel will fit in standard 1.25 inch focusers And diagonals, and the will accept 1.25 inch eyepieces. A metal thumbscrew locks the eyepiece firm in place. SPECIFICATIONS Magnification (x): 2 x Weight: about 2.88 ounces Color: silver + black Material: aluminum alloy Package Contents: 1* telescope accessory.Eye relief is the distance your eye has to be from the first lens in the eyepiece in order to see the full field of view. When you use a Barlow lens with an eyepiece, you get double the magnification, but the eye relief is not affected This is a good thing, because normally the shorter the focal length of the eyepiece, the less eye relief you have.
