Alstar Finderscope Starpointer for Astronomical Telescopes with Slidein Bracket

A small red LED dot is projected onto a non magnifying viewing window so you can aim the main telescope quickly and easily, Thumbwheels allow positioning of the red dot horizontally and vertically for precise telescope alignment, Includes bracket that fits the dovetail mounting base on many telescopes, Brightness of the red dot is adjustable to suit your preference; Requires CR 2032 lithium button cell battery which is Not Include, Simple; affordable and effective red dot sighting device makes aiming your telescope a cinch