Celestron - 2x -1-1/4 inch Omni Barlow Lenses

The Omni Barlow is a high quality 2x Barlow lens that doubles the magnification of all 1.25in. eyepieces. This economically
priced Barlow has great features like, low profile, 2-element fully-multicoated optical design and blacked lens edges. 

Barlow lenses provide an economical and also easy way to increase the magnification range of your eyepieces. A Barlow lens
doubles the magnifying power of your eyepiece by doubling its effective focal length that it is used with. For example, using an
18mm eyepiece used with a 2x Barlow lens, this would have the magnifying power of a 9mm eyepiece. The results of a Barlow lens is
like having two eyepieces in one. Barlow lenses are an affordable way to achieve high-power viewing of the moon and planets as
well as other celestial objects. The lenses can be mounted into either your telescope focuser or visual back.