{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-09-04","schedule":[{"end":"2025-09-05T01:00Z","end_local":"04:00","hours":8.25,"mean_quality":0.0,"start":"2025-09-04T16:45Z","start_local":"19:45","target":null},{"end":"2025-09-05T02:50Z","end_local":"05:50","hours":1.83,"mean_quality":0.67,"start":"2025-09-05T01:00Z","start_local":"04:00","target":"M45"},{"end":"2025-09-05T03:55Z","end_local":"06:55","hours":1.08,"mean_quality":0.0,"start":"2025-09-05T02:50Z","start_local":"05:50","target":null}],"targets":[{"best_window":{"end":"2025-09-05T02:15Z","end_local":"05:15","hours":1.25,"label":"good","mean_quality":0.75,"start":"2025-09-05T01:00Z","start_local":"04:00"},"dec":24.11388889,"moon_separation":113.5,"name":"M45","quality_hours":1.62,"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":40,"score_astronomy":100,"score_weather":40,"transit":{"airmass":1.05,"alt":72.5,"az":179.2,"t":"2025-09-05T03:10Z"},"verdict":"marginal","weather_known":true,"windows":[{"end":"2025-09-04T21:40Z","end_local":"00:40","hours":4.92,"label":"unusable","mean_quality":0.0,"start":"2025-09-04T16:45Z","start_local":"19:45"},{"end":"2025-09-05T00:00Z","end_local":"03:00","hours":2.33,"label":"poor","mean_quality":0.13,"start":"2025-09-04T21:40Z","start_local":"00:40"},{"end":"2025-09-05T01:00Z","end_local":"04:00","hours":1.0,"label":"unusable","mean_quality":0.0,"start":"2025-09-05T00:00Z","start_local":"03:00"},{"end":"2025-09-05T02:15Z","end_local":"05:15","hours":1.25,"label":"good","mean_quality":0.75,"start":"2025-09-05T01:00Z","start_local":"04:00"},{"end":"2025-09-05T02:50Z","end_local":"05:50","hours":0.58,"label":"marginal","mean_quality":0.49,"start":"2025-09-05T02:15Z","start_local":"05:15"},{"end":"2025-09-05T03:25Z","end_local":"06:25","hours":0.58,"label":"poor","mean_quality":0.15,"start":"2025-09-05T02:50Z","start_local":"05:50"},{"end":"2025-09-05T03:55Z","end_local":"06:55","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2025-09-05T03:25Z","start_local":"06:25"}]}],"unscheduled":[],"warnings":[]}