Rigel Systems QuikFinder Compact Reflex Sight with Built-in Dew Shield, Extra Base & Battery One Tenth the size & weight of some other "reflex" sights, makes aiming your telescope easy with its wide-open right-side-up view. Projects 1/2 and 2 Degree Red circles Onto the Night Sky in focus with the stars.. what you see in the red circles is what you get in your telescope Pulsed or Continuous Illumination of Reticle.. at your behest. A standard feature on QuikFinder, a $20 option on other reflex sights. Compact Design Lets You Use Both Eyes to see fainter than with other "reflex" sights. Two Baseplates Lets You Use It on Two Telescopes. Easy clip-on / clip-off mounting to baseplate (no screws to fumble with).