{"calculation_version":"2026-10-10.1","forecast_source":"none","night_date":"2027-09-19","schedule":[{"end":"2027-09-20T00:55Z","end_local":"03:55","hours":8.58,"mean_quality":0.0,"start":"2027-09-19T16:20Z","start_local":"19:20","target":null},{"end":"2027-09-20T02:35Z","end_local":"05:35","hours":1.67,"mean_quality":0.38,"start":"2027-09-20T00:55Z","start_local":"03:55","target":"M42"},{"end":"2027-09-20T04:10Z","end_local":"07:10","hours":1.58,"mean_quality":0.0,"start":"2027-09-20T02:35Z","start_local":"05:35","target":null}],"targets":[{"best_window":{"end":"2027-09-20T02:35Z","end_local":"05:35","hours":1.67,"label":"marginal","mean_quality":0.38,"start":"2027-09-20T00:55Z","start_local":"03:55"},"dec":-5.3876,"moon_separation":51.2,"name":"M42","quality_hours":0.95,"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":null,"score_astronomy":10,"score_weather":null,"transit":{"airmass":1.47,"alt":42.9,"az":179.2,"t":"2027-09-20T04:00Z"},"verdict":"unknown","weather_known":false,"windows":[{"end":"2027-09-20T00:15Z","end_local":"03:15","hours":7.92,"label":"unusable","mean_quality":0.0,"start":"2027-09-19T16:20Z","start_local":"19:20"},{"end":"2027-09-20T00:55Z","end_local":"03:55","hours":0.67,"label":"poor","mean_quality":0.24,"start":"2027-09-20T00:15Z","start_local":"03:15"},{"end":"2027-09-20T02:35Z","end_local":"05:35","hours":1.67,"label":"marginal","mean_quality":0.38,"start":"2027-09-20T00:55Z","start_local":"03:55"},{"end":"2027-09-20T03:40Z","end_local":"06:40","hours":1.08,"label":"poor","mean_quality":0.14,"start":"2027-09-20T02:35Z","start_local":"05:35"},{"end":"2027-09-20T04:10Z","end_local":"07:10","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2027-09-20T03:40Z","start_local":"06:40"}]}],"unscheduled":[],"warnings":[]}