A finderscope is an aiming device used in astronomy, typically a small auxiliary telescope mounted on the main astronomical telescope along the same line of sight. The finderscope usually has a smaller magnification than the main telescope, providing a much larger field of view, useful for manually aiming (also called `slewing`) a telescope and .....
Found on
http://en.wikipedia.org/wiki/Finderscope
A small telescope used to aim your main scope at an object in the sky. Finderscopes have low magnifications, wide fields of view, and (usually) crosshairs marking the center of the field.
Found on
http://www.skyandtelescope.com/astronomy-terms/
No exact match found.
