How Do Barlows Work?

A Barlow lens is a concave lens that when placed between a telescopes objective lens or mirror and the eyepiece, will increase the magnification of the telescope. A Barlow lens will connect directly to your eyepiece. The most common Barlow is the 2x Barlow.

What does the 3x Barlow lens do?

Description: When inserted between the eyepiece and telescope, this premium 3x Barlow lens triples the magnification of all your 1.25” eyepieces.

What does a Barlow do to focal length?

Barlow lenses are concave or negative lenses that amplify or magnify the image produced by your telescope. They work by lengthening the converging cone of light from the scope, effectively increasing its focal length.