Image Trac was a 1997-99 development by Unitron to provide digital setting circles to support a push to capability for the 3″ Equatorial. It’s introduction was mentioned in an August 1997 interview of Thomas Zappetti, then Principal Owner of Unitron. That interview done by Barry Kawa is hosted on the Astromart website (see History/Interviews Page). It’s functionality is described in Xavier Debeerst’s blog located on the Information Link Page. Photos provided courtesy of Xavier Debeerst.