{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-04-14","schedule":[{"end":"2025-04-15T03:45Z","end_local":"06:45","hours":10.75,"mean_quality":0.0,"start":"2025-04-14T17:00Z","start_local":"20:00","target":null}],"targets":[{"best_window":null,"dec":2.05238823,"moon_separation":41.0,"name":"3C 273","quality_hours":0.21,"ra":187.27791594,"resolved":{"dec":2.05238823,"morphology":"E3","name":"3C 273","ra":187.27791594,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=3C%20273","source":"sesame","type":"BLL","type_text":"BL Lac object \u2014 a blazar","vmag":14.83},"score":4,"score_astronomy":76,"score_weather":6,"transit":{"airmass":1.3,"alt":50.2,"az":180.7,"t":"2025-04-14T21:20Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2025-04-14T23:00Z","end_local":"02:00","hours":6.0,"label":"unusable","mean_quality":0.0,"start":"2025-04-14T17:00Z","start_local":"20:00"},{"end":"2025-04-15T00:00Z","end_local":"03:00","hours":1.0,"label":"poor","mean_quality":0.21,"start":"2025-04-14T23:00Z","start_local":"02:00"},{"end":"2025-04-15T03:45Z","end_local":"06:45","hours":3.75,"label":"unusable","mean_quality":0.0,"start":"2025-04-15T00:00Z","start_local":"03:00"}]}],"unscheduled":[{"name":"3C 273","why":"Overcast (\u226580 % cloud) for 8.7 of 9.8 dark hours \u2014 the sky is closed whatever the geometry says."}],"warnings":[]}