The Rigel Quikfinder is a lightweight reflex system that works perfectly with the Astroscan or most other telescopes.
It works as a zero-power finder that projects 1/2 and 2 degree red circles onto the night sky. The Quikfinder is actually easier to calibrate and aim than the finderscopes on most telescopes.
The Quikfinder comes with two bases that can be attached to the telescope and the Quikfinder simply clips onto. Quikfinder also has a pulsed or continuous circle illumination as well as brightness control. Rugged construction, ultra efficient LED, and lithium battery (included) for a long life.
Needs no drilling and is easily removed from the baseplate. Baseplate is 2.5" long, 2" wide, and 1/2" high. Quikfinder is 4.5" tall and 1.4" square.
Optical Design: Reflex, Zero Magnification
"... Rugged and simple to use... It is the only unit tested that has a blinking reticle. A tiny knob next to the on-off/brightness control varies the rate from about one pulse per second to an attention getting flicker. At first I felt this feature might be a gimmick, but it proved its worth in the field. I could keep the reticle nice and bright and still see dim stars that disappeared under a constant setting."
-David Regen in Sky and Telescope