Abstract: An improved impersonal eyepiece for astronomic positioning is affixed to an optical viewing device to provide a means for observing the position of a celestial object at timed intervals. The viewing device produces a source image of the celestial object and a light source in the eyepiece is energized at timed intervals by a control circuit to illuminate a reticle mask and to thereby superimpose a reticle reference image on the source image during each of the timed intervals. The position of the celestial object with respect to the illuminated reticle is noted during each timed interval and the data so obtained is used to define a reference position.