Spotting scope

A spotting scope is a compact lightweight portable telescope optimized for detailed observation of distant objects.

[1] They are used as tripod mounted optical enhancement devices for various outdoor activities such as birdwatching, skygazing and other naturalist activities, for hunting and target shooting to verify a marksman's shot placements, for tactical ranging and surveillance, and for any other application that requires higher magnification than ordinary binoculars (typically 20× to 60×).

The light-gathering power and resolution of a spotting scope is determined by the diameter of the objective lens, typically between 50 and 80 mm (2.0 and 3.1 in).

The optical assembly has a small refracting objective lens, an internal image-erecting system, and an eyepiece that is usually removable.

The high magnification of spotting scopes makes them prone to image disturbance from vibrations, so they are often stabilized with tripods or (less commonly) monopods, which provide a stationary and steady platform.