Werner Landgraf
He also developed a method of eliminating systematic errors in positioning brighter comets that resulted in a more accurate prediction of the Halley's Comet. A recalculation of the path of Halley's comet to 2317 BC confirmed that the Greeks had already seen the comet on 466 B.C.
He discovered seven minor planets including 3683 Baumann, 4378 Voigt (named after Hans-Heinrich Voigt), 9938 Kretlow and 4349 Tibúrcio at ESO's La Silla Observatory in northern Chile.
Space Place at Carter Observatory
After Crossley’s death in 1905, the telescope was purchased by Reverend Dr David Kennedy and shipped to New Zealand, where it was installed at the Meeanee Observatory at the Marist Seminary near Napier. Kennedy used the telescope to take photographs of Halley’s Comet during its 1910 approach.