The versatile Finder Deluxe Telescope Reflex Sight will help you take your telescope in new directions! Perfect for use during the night and daytime, the Finder Deluxe sight features both a red LED for nighttime aiming and a brighter green LED for aiming in twilight and most daylight conditions. Reflex sights are popular thanks to the intuitive, non-magnified method they employ to help you aim your telescope accurately. Depending on your chosen LED color, a small LED emits a red or green aiming pattern onto a viewing window which you peer through to aim the telescope after a simple alignment procedure. Once the pattern is lined up with your intended target object, you're all set to view it through the telescope. Many amateur astronomers use both a magnified finder scope and a reflex sight to provide helpful options for pointing their telescope accurately. With four different red or green LED-illuminated reticle patterns to choose from, the EZ Finder Deluxe II makes aiming your telescope easier than ever. Five brightness levels let you adapt the reticle's intensity to the prevailing viewing conditions. This reflex sight aiming device for any telescope has a larger viewing window than the Finder, making the Finder Deluxe easier to use as it projects the chosen pattern on a wider area of sky or horizon. Vertical and horizontal fine-adjustment screws allow precise alignment with the main telescope. All-metal construction gives the Finder Deluxe Telescope Reflex Sight the precision and durability demanded by serious observers. The sight includes a machined dovetail finder scope bracket that fits most telescopes or our dovetail mounting bases (sold separately). A single CR2032 lithium button-cell battery (Not Included) is required for use.