Spektiv Sommer Astro Aktion Prostaff 5 82-A + 38x Okular

Distinguishes the type or direction of the eyepiece position on a spotting scope.

Specifies how much larger an object appears compared to when viewed with the naked eye. For most spotting scopes, variable magnification zoom eyepieces are available.

Optical surfaces are metallized with coatings to increase the optical performance of the instrument.

A removable lens cap. Useful to avoid lateral reflections and condensation.

Some spotting scopes come with the (zoom) eyepiece included. Usually it is possible to tell from the spotting scope description whether an eyepiece is included.

Some spotting scopes have an integrated digital camera for digiscoping. The advantage: especially compact, and no further camera equipment is required.

Watertight optics are equipped with special seals and are gas-purged. This is usually with nitrogen or argon gas. Since these gases are heavier than air, they cannot escape.

The shortest distance at which the spotting scope can still be focused.