SVBONY SV137 Eyepiece Barlow Lens 2x Professional Telescope Part 1.25'' Fully Multi-Coated Astronomical Eyepiece

Magnification:2X Insert Barlow Lens between your eyepiece and your telescope to get the magnification instantly. 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 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. Coating:Fully Multi-coated FMC coating can effectively improve the transmittance of light; ensure clear vision and sharp image Come with Male T-thread SVBONY SV137 2x barlow lens has a male T-thread on its back that can be used to attach a DSLR camera and other T-thread type accessories Brass compression ring A brass compression ring can protect your eyepiece from marring or scratching the barrel.Keeping your eyepiece in new looking. Specifications: