Photographic double refractor (astrometric camera). The diameter of the photographic objectives is 40 cm, the focal length 200 cm. The visual guiding telescope has 250 mm diameter and a focal length of 400 cm. The refractor has been used for photographing large areas of the sky (6 x 8 degrees), mainly for the study of minor planets, comets and nebulae, as well as for measurements of proper motions of stars. The refractor is a donation of Cathrine W. Bruce, and in operation since 1900.
A photograph of the Landessternwarte Heidelberg-Königstuhl. Click on the picture for more information. A clickable map of the all whole institute area is also availableGerhard Klare, Gabriella Ramge, Otmar Stahl