{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2026-06-03","schedule":[{"end":"2026-06-03T19:10Z","end_local":"22:10","hours":1.33,"mean_quality":0.0,"start":"2026-06-03T17:50Z","start_local":"20:50","target":null},{"end":"2026-06-03T22:20Z","end_local":"01:20","hours":3.17,"mean_quality":0.57,"start":"2026-06-03T19:10Z","start_local":"22:10","target":"3C 273"},{"end":"2026-06-04T02:50Z","end_local":"05:50","hours":4.5,"mean_quality":0.0,"start":"2026-06-03T22:20Z","start_local":"01:20","target":null}],"targets":[{"best_window":{"end":"2026-06-03T21:25Z","end_local":"00:25","hours":1.42,"label":"good","mean_quality":0.77,"start":"2026-06-03T20:00Z","start_local":"23:00"},"dec":2.05238823,"moon_separation":106.6,"name":"3C 273","quality_hours":1.91,"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":42,"score_astronomy":47,"score_weather":89,"transit":{"airmass":1.3,"alt":50.2,"az":180.9,"t":"2026-06-03T18:05Z"},"verdict":"marginal","weather_known":true,"windows":[{"end":"2026-06-03T18:25Z","end_local":"21:25","hours":0.58,"label":"unusable","mean_quality":0.0,"start":"2026-06-03T17:50Z","start_local":"20:50"},{"end":"2026-06-03T19:10Z","end_local":"22:10","hours":0.75,"label":"poor","mean_quality":0.1,"start":"2026-06-03T18:25Z","start_local":"21:25"},{"end":"2026-06-03T20:00Z","end_local":"23:00","hours":0.83,"label":"marginal","mean_quality":0.37,"start":"2026-06-03T19:10Z","start_local":"22:10"},{"end":"2026-06-03T21:25Z","end_local":"00:25","hours":1.42,"label":"good","mean_quality":0.77,"start":"2026-06-03T20:00Z","start_local":"23:00"},{"end":"2026-06-03T22:20Z","end_local":"01:20","hours":0.92,"label":"marginal","mean_quality":0.46,"start":"2026-06-03T21:25Z","start_local":"00:25"},{"end":"2026-06-03T22:25Z","end_local":"01:25","hours":0.08,"label":"poor","mean_quality":0.29,"start":"2026-06-03T22:20Z","start_local":"01:20"},{"end":"2026-06-04T02:50Z","end_local":"05:50","hours":4.42,"label":"unusable","mean_quality":0.0,"start":"2026-06-03T22:25Z","start_local":"01:25"}]}],"unscheduled":[],"warnings":[]}