Sinus Iridum Trendsetters Corrie en Ko (1956) The galaxy M51 and polar light Last sighting of Mercury Orion wacht über uns Polar light (March 2025) Polar light (March 2025) HWW from 't Klooster Ter Apel Probebild Partial solar eclips Mercury meets Venus Venus meets Mercury Another nice sunset Venus and Mercury Verschleierter Venus Klarer Himmel wenn bloß die Flugzeuge nicht da wär… Mercury Skycolours Mercury and the Moon Mercury, Venus and Moon A fenceless world Winter ade Zuidgevel Klooster (Johan Abeling) Wintersechseck Orion and Ghost nebulae Moon (view on black) Pleiades Mond Topologie V Europa's verschwinden ..... too old to sit on Open (Johan Abeling) Mond Topologie IV