Astromania StarPointer Finderscope for Astronomical Telescopes Reflex Viewfinder, Red Dot Finder Scope Sight Telescope Accessories with Slide-in Bracket Compatible for Universal Dovetail Mounting Base

The EZ Finder is a simple, but efficient point-where-you-want-to-go device for finding celestial objects. It superimposes a tiny, LED-powered red dot at infinity on the s. When aligned with your telescope's field of view, the dot shows you exactly where your telescope is pointed. It's easier than a standard finder scope because what you see through the EZ Finder is a non-magnified, naked-eye view of the s that is correctly oriented, not upside down. The brightness of the dot, which is centered in a 10-deg field of view, can be adjusted to suit your preference. Thumbwheels allow positioning of the dot horizontally and vertically for precise alignment with the main telescope. EZ Finder comes with a bracket that fits the quick-release dovetail mounting on many telescopes. For installation on other telescopes, the dovetail base can be purchased separately. The Finderscope Starpointer runs on a 3-volt lithium battery (Requires CR-2032 lithium button-cell battery (Not Include).) which is available from many retail outlets. Replacing the Battery: Please remove the old battery by inserting a small flat-head screwdriver into the slot on the battery casing (Figure 3) and gently prying open the case. Then carefully pull back on the retaining clip and remove the old battery. Please do not overbend the retaining clip. Then slide the new battery under the battery lead with the positive (+) end facing down and replace the battery casing.