{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-08-15","schedule":[{"end":"2025-08-15T23:00Z","end_local":"02:00","hours":5.67,"mean_quality":0.0,"start":"2025-08-15T17:20Z","start_local":"20:20","target":null},{"end":"2025-08-16T01:50Z","end_local":"04:50","hours":2.83,"mean_quality":0.51,"start":"2025-08-15T23:00Z","start_local":"02:00","target":"M45"},{"end":"2025-08-16T03:35Z","end_local":"06:35","hours":1.75,"mean_quality":0.0,"start":"2025-08-16T01:50Z","start_local":"04:50","target":null}],"targets":[{"best_window":{"end":"2025-08-16T01:50Z","end_local":"04:50","hours":2.83,"label":"marginal","mean_quality":0.51,"start":"2025-08-15T23:00Z","start_local":"02:00"},"dec":24.11388889,"moon_separation":10.2,"name":"M45","quality_hours":1.7,"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":24,"score_astronomy":24,"score_weather":100,"transit":{"airmass":1.05,"alt":72.5,"az":180.3,"t":"2025-08-16T04:30Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2025-08-15T22:55Z","end_local":"01:55","hours":5.58,"label":"unusable","mean_quality":0.0,"start":"2025-08-15T17:20Z","start_local":"20:20"},{"end":"2025-08-15T23:00Z","end_local":"02:00","hours":0.08,"label":"poor","mean_quality":0.28,"start":"2025-08-15T22:55Z","start_local":"01:55"},{"end":"2025-08-16T01:50Z","end_local":"04:50","hours":2.83,"label":"marginal","mean_quality":0.51,"start":"2025-08-15T23:00Z","start_local":"02:00"},{"end":"2025-08-16T03:05Z","end_local":"06:05","hours":1.25,"label":"poor","mean_quality":0.18,"start":"2025-08-16T01:50Z","start_local":"04:50"},{"end":"2025-08-16T03:35Z","end_local":"06:35","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2025-08-16T03:05Z","start_local":"06:05"}]}],"unscheduled":[],"warnings":[]}