The CDK20 South Planewave Instruments 20-inch (0.5-meter) f/6.8 corrected Dall Kirkham telescope is shown here with its optical designer Joe Haberman at Mt. Kent Observatory in Queensland, Australia, at the time of its installation in 2006. ... The corrected Dall Kirkham optical system provides a unique, wide, diffraction-limited, flat field ideal for CCD imaging and photometry. The telescopes at Mt. ... Instrumentation available for remote operation of the telescopes includes . ...