Vixen NA140SSf Telescope 140mm w/ Dual Speed Focuser 5868 weighing in at 14.3 lbs makes this Vixen telescope is an incredibly lightweight performer. Deep Sky objects are easily visible and astro-imagers looking for a fast instrument with clear aperture will be impressed with the Vixen NA140 's 5868 performance. The advanced 4-element objective lens, set in two groups, minimizes residual chromatic aberrations. With its unique Petzval like correcting lens at the rear, this Neo-Achromatic telescope is specifically designed to provide improved color and a flat field, ideal for astrophotography. Includes Vixen 's new Dual Speed Focuser. For a full line of Vixen Telescopes and other products by Vixen on sale please visit the Vixen Telescopes page on our website. For more brand name Telescopes please visit our Telescopes store section.