Landove 1.25" Barlow Lens 2X Multi Coated T Adapter Double Lens 3 Element APO with HD Broadband Green Film Optics for Standard Telescope Eyepiece

a Barlow lens is a great cost-effective way to increase the magnification of your telescope the most common Barlow is a 2x Barlow which doubles the magnification of any eyepiece Barlow's are also available in 2.5 X and even 3x magnification when it was first invented in the 1830s the Barlow lens was an unsophisticated instrument that produced higher magnification but visibly dim images since then optical technology has come a long way today's Barlow's contain multiple lenses with high-quality optical coatings capable of exceptional light transmission the good Barlow lens will only do an image about 3% adding a Barlow lens is a cost-effective way to double your eyepiece collection for example let's say you own a thirty two millimeter twenty six millimeter and ten millimeter eyepiece combining each of these with a 2x Barlow gives you the magnification of a 16 millimeter 13 millimeter and