{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-09-02","schedule":[{"end":"2025-09-02T21:45Z","end_local":"00:45","hours":4.92,"mean_quality":0.0,"start":"2025-09-02T16:50Z","start_local":"19:50","target":null},{"end":"2025-09-03T02:50Z","end_local":"05:50","hours":5.08,"mean_quality":0.81,"start":"2025-09-02T21:45Z","start_local":"00:45","target":"M45"},{"end":"2025-09-03T03:50Z","end_local":"06:50","hours":1.0,"mean_quality":0.0,"start":"2025-09-03T02:50Z","start_local":"05:50","target":null}],"targets":[{"best_window":{"end":"2025-09-03T02:15Z","end_local":"05:15","hours":3.92,"label":"good","mean_quality":0.91,"start":"2025-09-02T22:20Z","start_local":"01:20"},"dec":24.11388889,"moon_separation":139.2,"name":"M45","quality_hours":4.22,"ra":56.60083333,"resolved":{"common_name":"Seven Sisters","dec":24.11388889,"name":"Cl Melotte 22","ra":56.60083333,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=M45","source":"sesame","type":"OpC","type_text":"open cluster"},"score":100,"score_astronomy":100,"score_weather":100,"transit":{"airmass":1.05,"alt":72.5,"az":180.8,"t":"2025-09-03T03:20Z"},"verdict":"good","weather_known":true,"windows":[{"end":"2025-09-02T21:45Z","end_local":"00:45","hours":4.92,"label":"unusable","mean_quality":0.0,"start":"2025-09-02T16:50Z","start_local":"19:50"},{"end":"2025-09-02T22:20Z","end_local":"01:20","hours":0.58,"label":"marginal","mean_quality":0.49,"start":"2025-09-02T21:45Z","start_local":"00:45"},{"end":"2025-09-03T02:15Z","end_local":"05:15","hours":3.92,"label":"good","mean_quality":0.91,"start":"2025-09-02T22:20Z","start_local":"01:20"},{"end":"2025-09-03T02:50Z","end_local":"05:50","hours":0.58,"label":"marginal","mean_quality":0.5,"start":"2025-09-03T02:15Z","start_local":"05:15"},{"end":"2025-09-03T03:25Z","end_local":"06:25","hours":0.58,"label":"poor","mean_quality":0.15,"start":"2025-09-03T02:50Z","start_local":"05:50"},{"end":"2025-09-03T03:50Z","end_local":"06:50","hours":0.42,"label":"unusable","mean_quality":0.0,"start":"2025-09-03T03:25Z","start_local":"06:25"}]}],"unscheduled":[],"warnings":[]}