Eyepiece lens description Barlow Objective lens diameter 1.25 inches Product dimensions 49D x 49W x 93H millimeters Focus type Fixed Focus Item weight 89 grams 2X magnification; 2X Barlow lens increases focal length by 2X; provides enhanced image details of planets; suitable for observation and photography of the moon, Jupiter, Saturn, and nebula Features M42 x 0.75mm thread; 2X Barlow lens with M42 x 0.75mm thread allows connection to camera via T-ring adapter (not included) Clear image quality; 2X Barlow lens with fully multi-coated optical glass lens ensures optimal image brightness, high contrast, and accurate color reproduction Easy to use; insert any 1.25" eyepiece into the Barlow lens and secure with the locking screw; ideal for planetary viewing; compatible with 1.25" eyepieces and zenith prisms Durable construction; 2X Barlow lens made of metal material resists deformation over long-term use; includes two dust covers for convenient carrying and storage