Main Features: Simple, affordable, and effective red dot sighting device for aiming your telescope Very easy to adjust; thumbwheels allow horizontal and vertical positioning of the red dot for precise telescope alignment Projects an adjustable red LED dot onto a non-magnifying viewing window to help aim the main telescope quickly and easily Includes mount bracket Material: Plastic Color: Black How to use a red dot finder: Remove the clear plastic sheet from the front and bottom to allow battery contact so the red dot appears when powered on Turn on the finder using the small rotary control on the side; look through the front viewing hole to see the red dot Adjust brightness using the rotary control, which also serves as the on/off switch Attach the red dot finder to your telescope in place of the standard optical finder Point the telescope at a distant object such as a TV aerial or chimney Use a low-power eyepiece (25mm recommended) to locate and center the object in the field of view using the telescope’s slow motion controls Adjust the red dot finder using the two adjustment wheels until the red dot is precisely centered on the same object The front right wheel adjusts left/right; the rear bottom wheel adjusts up/down Turn off the finder and wait until dark to begin observation To use, turn on the finder and align the red dot with your target; once the red dot is over the star or planet, it should appear in the center of the eyepiece view Turn off the finder after use to conserve battery Package Includes: Red Dot Finder Scope (includes button battery)