Astronomy tests two tracking mounts
Astroimager Tony Hallas looks at two highly portable accessories — Takahashi's Teegul Sky-Patrol II and AstroTrac's TT320X-AG — that will let you shoot the sky without straining your back.
December 28, 2011
Earth’s rotation creates a problem for photographers who want to image the night sky. A time exposure results in stars that look like arcs, and any object larger than a point will appear blurred. Furthermore, most imagers don’t want to expend the effort needed to transport and set up a telescope’s drive system, which would correct the problem.
The Takahashi Teegul Sky-Patrol II is a miniature equatorial mount that features fine-motion controls and runs on 6 volts DC. The AstroTrac TT320X-AG combines a long lead-screw with a tanget arm and offers high rigidity and a tracking length of two hours.
Photo by Tony Hallas
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