Fig. 7: Open observatory dome of the southern tower with a view of the parabolic mirror of the submillimetre telescope KOSMA (Cologne Observatory for SubMillimetre Astronomy). Dieses durften wir am Abend kurz besichtigen und mit den Astronomen plaudern. At that time, the Italian infrared telescope TIRGO (Telescopio InfraRosso del Gornergrat) was located in the north tower. — March 2001
