IN 154 Rev. D 11/14
instruction Manual
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orion astrotrack
™
Dc Motor Drive
for EQ-1 Mount
#7812
The AstroTrack DC Motor Drive provides precise electronic, hands-free tracking of celestial
objects as they move across the sky. Designed for use with the Orion EQ-1 and Min-EQ
equatorial mounts, the AstroTrack counteracts the rotation of the Earth on its axis, making
objects appear to stand still in the telescope’s field of view. You won’t have to reposition the
telescope to re-center an object in the eyepiece as the object moves across the sky – a
welcome convenience!
The AstroTrack has variable-speed tracking control, allowing adjustment to the exact side-
real tracking rate as well as to speeds slightly slower or faster than sidereal. This ensures
accurate tracking of both solar system and deep-sky objects, and allows for correction of
any inherent deviation in the motor from the sidereal rate.
The AstroTrack provides sufficiently accurate tracking for piggyback and planetary (eye-
piece projection) astrophotography. It is not recommended for prime focus, long-exposure
photography.
