Guider's choice!This Plossl reticle eyepiece is a must-have accessory for those interested in guided astrophotography. It keeps a guide star stationary during long exposures to avoid star trailing. The five-element guiding eyepiece has a .0075-inch double-spaced line reticle pattern. To use it position the guide star in the middle square or at the intersection of two lines whichever is easier for you. Optics are multi-coated for increased contrast. High power is ideal for guiding and the eyepiece has a 50-degree apparent field of view. An optional illuminator is required for use.Shoot the planets with the Celestron NexImage Solar System Imager
