Used Tele Vue Barlow Lens, 2x, 2" (Big Barlow) with Brass Clamp Rings.

Experience the exceptional performance of the Tele Vue 2" 2x Big Barlow Lens, a high-quality optical accessory designed to enhance your stargazing experience. This versatile lens is ideal for Newtonian scope owners, offering a 2x magnification that amplifies power and improves eyepiece sharpness.

The Big Barlow Lens is parfocal with both 2" and 1-1/2" eyepieces, ensuring a seamless transition between different eyepieces. It features a 1-1/4" eyepiece adapter and threads for 48mm filters, providing flexibility and adaptability for various viewing scenarios.

Designed with the user in mind, this lens includes a captive lock screw and full multi-coatings, ensuring durability and longevity. The Tele Vue Barlow line was crafted to complement the high performance of our eyepieces, using only two elements of high-index glass to reduce all aberrations to well below the airy disc in an f/4 system.

This lens is a testament to Tele Vue's commitment to quality, using multi-coated high index glasses for optimum aberration correction and exceptional contrast with virtually no light loss. The result is an aberration-free performance, even when tested with f/4 scopes.

The Tele Vue 2" 2x Big Barlow Lens also features brass clamp rings for secure, non-marring holding of eyepieces and accessories. However, please note that the Big Barlow is not recommended for use with 2" diagonals due to its length, which may prevent it from being parfocal.

In conclusion, the Tele Vue 2" 2x Big Barlow Lens is a reliable, efficient, and high-quality optical accessory that enhances your telescope's performance, providing a superior viewing experience.