{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-09-08","schedule":[{"end":"2025-09-08T22:10Z","end_local":"01:10","hours":5.5,"mean_quality":0.0,"start":"2025-09-08T16:40Z","start_local":"19:40","target":null},{"end":"2025-09-09T02:20Z","end_local":"05:20","hours":4.17,"mean_quality":0.44,"start":"2025-09-08T22:10Z","start_local":"01:10","target":"M45"},{"end":"2025-09-09T04:00Z","end_local":"07:00","hours":1.67,"mean_quality":0.0,"start":"2025-09-09T02:20Z","start_local":"05:20","target":null}],"targets":[{"best_window":{"end":"2025-09-09T02:20Z","end_local":"05:20","hours":4.17,"label":"marginal","mean_quality":0.44,"start":"2025-09-08T22:10Z","start_local":"01:10"},"dec":24.11388889,"moon_separation":57.6,"name":"M45","quality_hours":2.13,"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":29,"score_astronomy":32,"score_weather":90,"transit":{"airmass":1.05,"alt":72.5,"az":179.8,"t":"2025-09-09T02:55Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2025-09-08T21:20Z","end_local":"00:20","hours":4.67,"label":"unusable","mean_quality":0.0,"start":"2025-09-08T16:40Z","start_local":"19:40"},{"end":"2025-09-08T22:10Z","end_local":"01:10","hours":0.83,"label":"poor","mean_quality":0.11,"start":"2025-09-08T21:20Z","start_local":"00:20"},{"end":"2025-09-09T02:20Z","end_local":"05:20","hours":4.17,"label":"marginal","mean_quality":0.44,"start":"2025-09-08T22:10Z","start_local":"01:10"},{"end":"2025-09-09T03:30Z","end_local":"06:30","hours":1.17,"label":"poor","mean_quality":0.17,"start":"2025-09-09T02:20Z","start_local":"05:20"},{"end":"2025-09-09T04:00Z","end_local":"07:00","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2025-09-09T03:30Z","start_local":"06:30"}]}],"unscheduled":[],"warnings":[]}