Barrel Size: 1.25" Magnification: 2x High aberration correction with the 3 Element lens design Fully multi coated Yields 2.6x with the use of item 3675 prism diagonal Designed for telescopes with fast focal ratios
GSO's 2" 2x achromatic Barlow increases the magnification of each eyepiece and effectively doubles or triples the number of eyepieces at your disposal Full unit increases magnification of eyepiece by 2x
This 1.25" Vixen 2x Barlow Lens includes an integrated T adapter for imaging applications, making it great for planetary and lunar imaging Giving you two magnifications per eyepiece The Vixen 2X Barlow with T-Threads weighs 3 ounces and has coated optics
Explore Scientific 1.25" 5x 4-element focal extender # FE05-125 with compression ring. Provides excellent control of chromatic and spherical aberration, and a flatter field-of-view compared to standard barlows. Fully multi-coated.