Finder scopes are a very important aid in observing the sky with a telescope.Most telescopes are already equipped with a finder telescope.They are basically small telescopes, which offer a small magnification and a large viewing field.
If they are aligned parallel to the telescope, an object can be easily adjusted by the viewfinder and the crosshair, which can be observed in the large telescope. The GuideScope is primarily used for tracking a telescope with a camera.