Double it better!Celestron's X-Cel ED 1.25-inch 2X Barlow lens is high on everyone's list of absolute must-have accessories. The ultimate in quality it features top-quality ED optical glass for sharper brighter images and it'll make quite a difference in your telescope's performance. .This ED Barlow lens doubles the magnifying power of any eyepiece. For example an 18mm eyepiece used with a 2X Barlow lens would have the magnifying power of a 9mm eyepiece. And on a telescope with say 1500mm focal length magnification would jump from 83X without the Barlow to 166X with it. And this in a compact package that weighs just 5 ounces and is 2.75 inches long.It's like having two top-quality eyepieces in one! No wonder folks like them: they can instantly double their eyepiece collection.Don't go to the star party without an astronomer's red flashlight.
