Celestron's HD Pro Wedge is designed to support our fork mounted Schmidt Cassegrain Telescopes up to 11". The HD Pro Wedge provides a heavy duty, stable platform that is perfect for astroimaging and guarantees minimal vibration. A low latitude range of 0-90° makes this wedge functional for use at the equator. Built-in features include altitude/azimuth adjustment controls with oversized knobs attached for easy polar alignment, a hand control holder that provides the option of placing on the wedge or the fork arm, a tilt plate for easier mounting of the telescope by simply rotating the scope onto the wedge, and a large 14mm diameter latitude adjustment screw to add strength and stability while supplying less vibration and easier rotation with a heavy telescope. HD Pro Wedge - General Features - 14mm Diameter Latitude Adjustment Screw - Adds strength and stability. Does not flex or bend providing less vibration and making it easier to rotate a heavy telescope. - 0-90° Latitude Range - Low latitude range, perfect for use at the equator. - Built-in Hand Control Holder - Allows user to place the hand control on the wedge or fork arm. Hand control won't fall off when fork arm is angled towards the ground. - Tilt Plate - Recesses to fit base of telescope and base of scope drops into place just by rotating. Mounting telescope on wedge becomes easier. - Heavy Duty Side Plates - More rigid with more material provides less vibration while imaging.