{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2026-05-02","schedule":[{"end":"2026-05-03T03:20Z","end_local":"06:20","hours":10.0,"mean_quality":0.0,"start":"2026-05-02T17:20Z","start_local":"20:20","target":null}],"targets":[{"best_window":null,"dec":2.05238823,"moon_separation":50.9,"name":"3C 273","quality_hours":0.01,"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":0,"score_astronomy":44,"score_weather":0,"transit":{"airmass":1.3,"alt":50.2,"az":180.6,"t":"2026-05-02T20:10Z"},"verdict":"unusable","weather_known":true,"windows":[{"end":"2026-05-02T17:55Z","end_local":"20:55","hours":0.58,"label":"unusable","mean_quality":0.0,"start":"2026-05-02T17:20Z","start_local":"20:20"},{"end":"2026-05-02T18:00Z","end_local":"21:00","hours":0.08,"label":"poor","mean_quality":0.07,"start":"2026-05-02T17:55Z","start_local":"20:55"},{"end":"2026-05-03T03:20Z","end_local":"06:20","hours":9.33,"label":"unusable","mean_quality":0.0,"start":"2026-05-02T18:00Z","start_local":"21:00"}]}],"unscheduled":[{"name":"3C 273","why":"Overcast (\u226580 % cloud) for 8.7 of 8.8 dark hours \u2014 the sky is closed whatever the geometry says."}],"warnings":[]}