{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-04-23","schedule":[{"end":"2025-04-23T19:00Z","end_local":"22:00","hours":1.83,"mean_quality":0.0,"start":"2025-04-23T17:10Z","start_local":"20:10","target":null},{"end":"2025-04-23T20:00Z","end_local":"23:00","hours":1.0,"mean_quality":0.4,"start":"2025-04-23T19:00Z","start_local":"22:00","target":"3C 273"},{"end":"2025-04-23T22:00Z","end_local":"01:00","hours":2.0,"mean_quality":0.0,"start":"2025-04-23T20:00Z","start_local":"23:00","target":null},{"end":"2025-04-24T01:00Z","end_local":"04:00","hours":3.0,"mean_quality":0.51,"start":"2025-04-23T22:00Z","start_local":"01:00","target":"3C 273"},{"end":"2025-04-24T03:30Z","end_local":"06:30","hours":2.5,"mean_quality":0.0,"start":"2025-04-24T01:00Z","start_local":"04:00","target":null}],"targets":[{"best_window":{"end":"2025-04-24T00:25Z","end_local":"03:25","hours":0.42,"label":"good","mean_quality":0.68,"start":"2025-04-24T00:00Z","start_local":"03:00"},"dec":2.05238823,"moon_separation":154.0,"name":"3C 273","quality_hours":1.97,"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":33,"score_astronomy":93,"score_weather":35,"transit":{"airmass":1.3,"alt":50.2,"az":180.8,"t":"2025-04-23T20:45Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2025-04-23T19:00Z","end_local":"22:00","hours":1.83,"label":"unusable","mean_quality":0.0,"start":"2025-04-23T17:10Z","start_local":"20:10"},{"end":"2025-04-23T20:00Z","end_local":"23:00","hours":1.0,"label":"marginal","mean_quality":0.4,"start":"2025-04-23T19:00Z","start_local":"22:00"},{"end":"2025-04-23T22:00Z","end_local":"01:00","hours":2.0,"label":"unusable","mean_quality":0.0,"start":"2025-04-23T20:00Z","start_local":"23:00"},{"end":"2025-04-24T00:00Z","end_local":"03:00","hours":2.0,"label":"marginal","mean_quality":0.49,"start":"2025-04-23T22:00Z","start_local":"01:00"},{"end":"2025-04-24T00:25Z","end_local":"03:25","hours":0.42,"label":"good","mean_quality":0.68,"start":"2025-04-24T00:00Z","start_local":"03:00"},{"end":"2025-04-24T01:00Z","end_local":"04:00","hours":0.58,"label":"marginal","mean_quality":0.49,"start":"2025-04-24T00:25Z","start_local":"03:25"},{"end":"2025-04-24T01:05Z","end_local":"04:05","hours":0.08,"label":"poor","mean_quality":0.27,"start":"2025-04-24T01:00Z","start_local":"04:00"},{"end":"2025-04-24T03:30Z","end_local":"06:30","hours":2.42,"label":"unusable","mean_quality":0.0,"start":"2025-04-24T01:05Z","start_local":"04:05"}]}],"unscheduled":[],"warnings":[]}