Harener Mühle (view on black) Harener Mühle (view on black) Horsehead nebula (view on black) Flame Nebula and Horsehead dark cloud Kranz um den Mond (view on black) Maya Date 6-6-653 Mars und Saturn am Morgenhimmel (AZ 160) Comet 252P/Linear (view on black) M44 Comet 252P/Linear (view on black) Comet 252P/Linear (view on black) Moon (view on black) Jupiter and companions Joeri Gagarin Moonscape I Moonscape II Milky Way over Oberlangen Had to be/Musste sein Vesuvius St. Maria degli Angeli Detail of the Meridian Mercury transit part 1 Mercury transit part 2 (view on black) Professor Ursin explaining a solar eclips M42, Orion nebula (view on black) Moon meets Jupiter (view on black) Close encounter (view on black) M45 The Plejades (view on black) ' t Klooster in Ter Apel Orionnebel Orion (negative) Dataprocessing (view on black) Greenbank, 300 ft Radiotelescope Starry night in Emsland (view on black) Viewing south (view on black) Comet Catalina Finally: comet Catalina Nur für Gudrun A very tiny Moon Unerwartete Himmelskarte Uranus Details an der Apotheke Solar eclips may 1706 Albrecht Dürer, 1515 Am Wernersches Haus