{"calculation_version":"2026-10-10.1","forecast_source":"none","night_date":"2027-02-19","schedule":[{"end":"2027-02-19T17:35Z","end_local":"19:35","hours":1.67,"mean_quality":0.0,"start":"2027-02-19T15:55Z","start_local":"17:55","target":null},{"end":"2027-02-19T21:05Z","end_local":"23:05","hours":3.5,"mean_quality":0.41,"start":"2027-02-19T17:35Z","start_local":"19:35","target":"M42"},{"end":"2027-02-20T05:15Z","end_local":"07:15","hours":8.17,"mean_quality":0.0,"start":"2027-02-19T21:05Z","start_local":"23:05","target":null}],"targets":[{"best_window":{"end":"2027-02-19T21:05Z","end_local":"23:05","hours":3.5,"label":"marginal","mean_quality":0.41,"start":"2027-02-19T17:35Z","start_local":"19:35"},"dec":-5.3876,"moon_separation":59.0,"name":"M42","quality_hours":1.81,"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":22,"score_weather":null,"transit":{"airmass":1.47,"alt":42.9,"az":180.1,"t":"2027-02-19T18:00Z"},"verdict":"unknown","weather_known":false,"windows":[{"end":"2027-02-19T16:30Z","end_local":"18:30","hours":0.58,"label":"unusable","mean_quality":0.0,"start":"2027-02-19T15:55Z","start_local":"17:55"},{"end":"2027-02-19T17:35Z","end_local":"19:35","hours":1.08,"label":"poor","mean_quality":0.17,"start":"2027-02-19T16:30Z","start_local":"18:30"},{"end":"2027-02-19T21:05Z","end_local":"23:05","hours":3.5,"label":"marginal","mean_quality":0.41,"start":"2027-02-19T17:35Z","start_local":"19:35"},{"end":"2027-02-19T21:50Z","end_local":"23:50","hours":0.75,"label":"poor","mean_quality":0.24,"start":"2027-02-19T21:05Z","start_local":"23:05"},{"end":"2027-02-20T05:15Z","end_local":"07:15","hours":7.42,"label":"unusable","mean_quality":0.0,"start":"2027-02-19T21:50Z","start_local":"23:50"}]}],"unscheduled":[],"warnings":[]}