{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-12-10","schedule":[{"end":"2025-12-10T21:00Z","end_local":"23:00","hours":6.17,"mean_quality":0.0,"start":"2025-12-10T14:50Z","start_local":"16:50","target":null},{"end":"2025-12-10T21:15Z","end_local":"23:15","hours":0.25,"mean_quality":0.32,"start":"2025-12-10T21:00Z","start_local":"23:00","target":"M42"},{"end":"2025-12-10T22:00Z","end_local":"00:00","hours":0.75,"mean_quality":0.0,"start":"2025-12-10T21:15Z","start_local":"23:15","target":null},{"end":"2025-12-10T23:00Z","end_local":"01:00","hours":1.0,"mean_quality":0.33,"start":"2025-12-10T22:00Z","start_local":"00:00","target":"M42"},{"end":"2025-12-11T01:00Z","end_local":"03:00","hours":2.0,"mean_quality":0.0,"start":"2025-12-10T23:00Z","start_local":"01:00","target":null},{"end":"2025-12-11T02:15Z","end_local":"04:15","hours":1.25,"mean_quality":0.46,"start":"2025-12-11T01:00Z","start_local":"03:00","target":"M42"},{"end":"2025-12-11T05:40Z","end_local":"07:40","hours":3.42,"mean_quality":0.0,"start":"2025-12-11T02:15Z","start_local":"04:15","target":null}],"targets":[{"best_window":{"end":"2025-12-11T02:15Z","end_local":"04:15","hours":1.25,"label":"marginal","mean_quality":0.46,"start":"2025-12-11T01:00Z","start_local":"03:00"},"dec":-5.3876,"moon_separation":77.2,"name":"M42","quality_hours":1.66,"ra":83.8201,"resolved":{"common_name":"Great Orion Nebula","dec":-5.3876,"name":"M 42","ra":83.8201,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=M42","source":"sesame","type":"HII","type_text":"HII region \u2014 a star-forming nebula"},"score":28,"score_astronomy":86,"score_weather":32,"transit":{"airmass":1.47,"alt":42.9,"az":180.7,"t":"2025-12-10T22:40Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2025-12-10T21:00Z","end_local":"23:00","hours":6.17,"label":"unusable","mean_quality":0.0,"start":"2025-12-10T14:50Z","start_local":"16:50"},{"end":"2025-12-10T21:15Z","end_local":"23:15","hours":0.25,"label":"marginal","mean_quality":0.32,"start":"2025-12-10T21:00Z","start_local":"23:00"},{"end":"2025-12-10T22:00Z","end_local":"00:00","hours":0.75,"label":"poor","mean_quality":0.28,"start":"2025-12-10T21:15Z","start_local":"23:15"},{"end":"2025-12-10T23:00Z","end_local":"01:00","hours":1.0,"label":"marginal","mean_quality":0.33,"start":"2025-12-10T22:00Z","start_local":"00:00"},{"end":"2025-12-11T01:00Z","end_local":"03:00","hours":2.0,"label":"poor","mean_quality":0.2,"start":"2025-12-10T23:00Z","start_local":"01:00"},{"end":"2025-12-11T02:15Z","end_local":"04:15","hours":1.25,"label":"marginal","mean_quality":0.46,"start":"2025-12-11T01:00Z","start_local":"03:00"},{"end":"2025-12-11T02:30Z","end_local":"04:30","hours":0.25,"label":"poor","mean_quality":0.28,"start":"2025-12-11T02:15Z","start_local":"04:15"},{"end":"2025-12-11T05:40Z","end_local":"07:40","hours":3.17,"label":"unusable","mean_quality":0.0,"start":"2025-12-11T02:30Z","start_local":"04:30"}]}],"unscheduled":[],"warnings":[]}
