Celestrons hd pro wedge is designed to support our fork mounted schmidt cassegrain and edgehd telescopes up to 11 inches the hd pro provides a heavy duty stable platform that is perfect for astroimaging and guarantees minimal vibration a low latitude range of 0 90 degrees makes this wedge functional for use at the equator built in features include altitudeazimuth adjustment controls with oversized knobs attached for easy polar alignment a hand control holder that provides the option of