{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-08-30","schedule":[{"end":"2025-08-30T22:00Z","end_local":"01:00","hours":5.08,"mean_quality":0.0,"start":"2025-08-30T16:55Z","start_local":"19:55","target":null},{"end":"2025-08-31T01:00Z","end_local":"04:00","hours":3.0,"mean_quality":0.7,"start":"2025-08-30T22:00Z","start_local":"01:00","target":"M45"},{"end":"2025-08-31T03:50Z","end_local":"06:50","hours":2.83,"mean_quality":0.0,"start":"2025-08-31T01:00Z","start_local":"04:00","target":null}],"targets":[{"best_window":{"end":"2025-08-31T01:00Z","end_local":"04:00","hours":1.0,"label":"good","mean_quality":0.91,"start":"2025-08-31T00:00Z","start_local":"03:00"},"dec":24.11388889,"moon_separation":175.6,"name":"M45","quality_hours":2.11,"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":53,"score_astronomy":98,"score_weather":54,"transit":{"airmass":1.05,"alt":72.5,"az":179.5,"t":"2025-08-31T03:30Z"},"verdict":"marginal","weather_known":true,"windows":[{"end":"2025-08-30T22:00Z","end_local":"01:00","hours":5.08,"label":"unusable","mean_quality":0.0,"start":"2025-08-30T16:55Z","start_local":"19:55"},{"end":"2025-08-30T22:25Z","end_local":"01:25","hours":0.42,"label":"marginal","mean_quality":0.51,"start":"2025-08-30T22:00Z","start_local":"01:00"},{"end":"2025-08-30T23:00Z","end_local":"02:00","hours":0.58,"label":"good","mean_quality":0.72,"start":"2025-08-30T22:25Z","start_local":"01:25"},{"end":"2025-08-31T00:00Z","end_local":"03:00","hours":1.0,"label":"marginal","mean_quality":0.56,"start":"2025-08-30T23:00Z","start_local":"02:00"},{"end":"2025-08-31T01:00Z","end_local":"04:00","hours":1.0,"label":"good","mean_quality":0.91,"start":"2025-08-31T00:00Z","start_local":"03:00"},{"end":"2025-08-31T03:50Z","end_local":"06:50","hours":2.83,"label":"unusable","mean_quality":0.0,"start":"2025-08-31T01:00Z","start_local":"04:00"}]}],"unscheduled":[],"warnings":[]}