Orion 52064 StarShoot AutoGuider A refreshingly easy-to-use and affordable autoguider for accurate long-exposure astrophotography. Now Mac compatible with Intel-based Mac computers! StarShoot AutoGuider keeps track of a selected guide star and communicates constantly with connected equatorial telescope mount to correct any tracking errors throughout long exposure astrophotography sessions Uses a 1/2" format 1.3MP CMOS chip, with tiny 5.2 x 5.2 micron pixels for highly accurate autoguiding so your astrophotos feature pinpoint star images Included software offers automatic calibration and autoguiding with a single mouse click Compatible with Mac OS X, Windows XP, Vista, 7 and Windows 8 Operating Systems. Not compatible with Windows 10.