astroscope

An old astronomical instrument formed of two cones, on whose surface the constellations were delineated.

The astroscope is the invention of Willliam Shuckhard, formerly professor of mathematics at Tubingen, who published a treatise expressly on it in 1698.

Amid all his exacting toil with "Mural arch Or zenith sector, or the quadrant's limb," with telescope and astroscope, with planetarium, with lunarium and orrery, calculating the reciprocal attraction and repulsion among the heavenly bodies, it is not surprising that he could get his orrery and Orra White a good deal mixed up, not, finding attraction without repulsion among earthly bodies, that he should get confused by conflicting facts and turn to his assistant for an explanation of this puzzling phenomena.

An astrological chart.

You can also construct your astroscope on a wheel, just as professional astrologers do.

I've been around, you know, talking to a lot of people. Hearing tsismis and confidences, analyses and off-the-record stuff. Reading astroscopes, getting the pulse.

A telescope powerful enough to see astronomical bodies.

astroscopes and other high precision optical devices

[…] refractors, catadioptric reflectors, astroscopes as well as binoculars.