The old Dwingloo telescope The Highlands Mare Imbrium Flame and Horsehead nebulae Orion and Ghost nebulae Pleiades M35 in Gemini (view on black) The open starclusters M46 and M47 Rosetta Nebula and NGC 2244 (view on black) Open starcluster M38 in Auriga Nebulae in Auriga California nebula in Perseï Crescent Moon (view on black) Moon on march 9 and 10 Sonnenaufgang in den Bergen Moon on march 11 Stückchen Mond: Aristarchos und Schrötertal Strahlensysteme im Oceanus Procellarum M1 Krabben-Nebel (view on black) Sonnenuntergang Leo triple (view on black) Sternkarte im Alsterhaus 16. Mai, totaler Mondfinsternis Da sass der kleine Prinz Jupiter Christmas Moon (view on black) Christmas Moon Comet C/2021 A1 Leonard (view on black) Comet C/2021 A1 Leonard (view on black) Comet C/2021 A1 Leonard (view on black) Comet C/2021 A1 Leonard (view on black) Walking the way of the planets (view on black) Komet Leonard Looking for the comet C/2021 A1 Leonard The Sun today Schnelltest von ..... M31, the Andromeda Nebula M31, Andromeda nebula (see on black) Urania, muse of astronomy Sicht auf Venus und Antares Hundertjähriger Kalender Astrolabium (um 1180) Klappsonnenuhr des Regiomontanus Moon meets Venus Cat's eye nebula