I really don't see the point. I'm big on finderscopes and less so with reflex finders but these little scopes are basically finderscopes in themselves even when used in the manual mode. With a simple 25mm GSO plossl my ETX will show 3.5º of the sky at 13X. My 24mm Panoptic showed me 4.4º at a whack. If I get a real brain cramp,my escape mechanism and face saver is to simply hit GOTO.