{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-08-18","schedule":[{"end":"2025-08-18T22:50Z","end_local":"01:50","hours":5.58,"mean_quality":0.0,"start":"2025-08-18T17:15Z","start_local":"20:15","target":null},{"end":"2025-08-18T23:00Z","end_local":"02:00","hours":0.17,"mean_quality":0.31,"start":"2025-08-18T22:50Z","start_local":"01:50","target":"M45"},{"end":"2025-08-19T03:35Z","end_local":"06:35","hours":4.58,"mean_quality":0.0,"start":"2025-08-18T23:00Z","start_local":"02:00","target":null}],"targets":[{"best_window":{"end":"2025-08-18T23:00Z","end_local":"02:00","hours":0.17,"label":"marginal","mean_quality":0.31,"start":"2025-08-18T22:50Z","start_local":"01:50"},"dec":24.11388889,"moon_separation":32.1,"name":"M45","quality_hours":0.68,"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":14,"score_astronomy":54,"score_weather":26,"transit":{"airmass":1.05,"alt":72.5,"az":181.6,"t":"2025-08-19T04:20Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2025-08-18T22:45Z","end_local":"01:45","hours":5.5,"label":"unusable","mean_quality":0.0,"start":"2025-08-18T17:15Z","start_local":"20:15"},{"end":"2025-08-18T22:50Z","end_local":"01:50","hours":0.08,"label":"poor","mean_quality":0.29,"start":"2025-08-18T22:45Z","start_local":"01:45"},{"end":"2025-08-18T23:00Z","end_local":"02:00","hours":0.17,"label":"marginal","mean_quality":0.31,"start":"2025-08-18T22:50Z","start_local":"01:50"},{"end":"2025-08-19T02:00Z","end_local":"05:00","hours":3.0,"label":"poor","mean_quality":0.2,"start":"2025-08-18T23:00Z","start_local":"02:00"},{"end":"2025-08-19T03:00Z","end_local":"06:00","hours":1.0,"label":"unusable","mean_quality":0.0,"start":"2025-08-19T02:00Z","start_local":"05:00"},{"end":"2025-08-19T03:05Z","end_local":"06:05","hours":0.08,"label":"poor","mean_quality":0.07,"start":"2025-08-19T03:00Z","start_local":"06:00"},{"end":"2025-08-19T03:35Z","end_local":"06:35","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2025-08-19T03:05Z","start_local":"06:05"}]}],"unscheduled":[],"warnings":[]}