Orion Mini Deluxe Pro AutoGuider Package A complete autoguiding solution designed for use with imaging telescopes up to 1500mm in focal length Comes with the highly sensitive StarShoot AutoGuider Pro with 74% quantum efficiency Included Deluxe Mini 50mm Guide Scope with Helical Focuser allows you to focus guide stars precisely for optimal results, without rotating the installed StarShoot AutoGuider Pro Adjustable-aim dovetail guide scope bracket installs on virtually any astrophotography telescope quickly and easily Small and compact autoguiding solution adds hardly any weight to an astrophotography setup