https://skychart.app/authors/jonas-wieland 2026-09-17T21:38:32.700Z Enodo Butterfly Jonas Wieland is a pen name, not a person: it signs the German edition of the SkyChart journal — recalculated for German, Austrian and Swiss skies, never simply translated. Reviewed before publication by astronomers who prefer to stay anonymous. https://skychart.app/logo-88x31.jpg https://skychart.app/favicon.ico All rights reserved 2026, SkyChart