Celestron Right Angle Correct Image Finderscope Black. The generous 50mm aperture produces bright sharp images with a magnification of 9x and a five-degree apparent field of view. Meanwhile the right-angle correct-image design keeps objects right-side-up and correctly oriented left-to-right making it easier to find objects and track them as they drift through the field of view. You can rotate the eyepiece module left or right to find the perfect viewing angle based on your setup. The double-crosshair reticle etched in the eyepiece makes it easy to center an object whether you are aligning your computerized telescope or finding deep-sky objects on your own. The reticle can be focused separately from the finder itself. The Celestron 9x50 RACI Finder comes with a sturdy bracket consisting of two rings and an integrated dovetail. The oversized thumbscrews make adjusting the finder's alignment easy. The dovetail allows for easy attachment to and removal from most Schmidt-Cassegrain and EdgeHD optical tube assemblies without affecting the finderscope's alignment. The eyepiece also features an attachment point for an aftermarket M8x1.25 thread-in illuminator. Specifications for Celestron Right Angle Correct Image Finderscope: Manufacturer: Celestron Color: Black Focal Length: 191 mm Field of View Angle: 5 degrees Weight: 24 oz Features of Celestron Right Angle Correct Image Finderscope Comfortable Right-Angle Design: Keeps your neck and back at ease during long sessions Correct-Image Optics: Produces natural views-ideal for both day and night use 9x Magnification with 50mm Aperture: Captures bright sharp visuals with a 5 degree field of view Double-Crosshair Reticle: Fine-etched lines help you center targets precisely without obscuring stars Adjustable Eyepiece Orientation: Rotate for the perfect viewing angle Durable Bracket & Dovetail Base: Includes a dual-ring bracket with oversized thumbscrews and a built-in dovetail that fits most Schmidt-Cassegrain and EdgeHD optical tubes Package Contents: Celestron Right Angle Correct Image Finderscope Celestron 93788: Right Angle Correct Image Finderscope Black