{"calculation_version":"2026-10-10.1","forecast_source":"none","night_date":"2027-02-21","schedule":[{"end":"2027-02-21T17:05Z","end_local":"19:05","hours":1.08,"mean_quality":0.0,"start":"2027-02-21T16:00Z","start_local":"18:00","target":null},{"end":"2027-02-21T21:30Z","end_local":"23:30","hours":4.42,"mean_quality":0.54,"start":"2027-02-21T17:05Z","start_local":"19:05","target":"M42"},{"end":"2027-02-22T05:10Z","end_local":"07:10","hours":7.67,"mean_quality":0.0,"start":"2027-02-21T21:30Z","start_local":"23:30","target":null}],"targets":[{"best_window":{"end":"2027-02-21T19:25Z","end_local":"21:25","hours":1.83,"label":"good","mean_quality":0.64,"start":"2027-02-21T17:35Z","start_local":"19:35"},"dec":-5.3876,"moon_separation":82.9,"name":"M42","quality_hours":2.53,"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":43,"score_weather":null,"transit":{"airmass":1.47,"alt":42.9,"az":179.3,"t":"2027-02-21T17:50Z"},"verdict":"unknown","weather_known":false,"windows":[{"end":"2027-02-21T16:30Z","end_local":"18:30","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2027-02-21T16:00Z","start_local":"18:00"},{"end":"2027-02-21T17:05Z","end_local":"19:05","hours":0.58,"label":"poor","mean_quality":0.13,"start":"2027-02-21T16:30Z","start_local":"18:30"},{"end":"2027-02-21T17:35Z","end_local":"19:35","hours":0.5,"label":"marginal","mean_quality":0.34,"start":"2027-02-21T17:05Z","start_local":"19:05"},{"end":"2027-02-21T19:25Z","end_local":"21:25","hours":1.83,"label":"good","mean_quality":0.64,"start":"2027-02-21T17:35Z","start_local":"19:35"},{"end":"2027-02-21T21:30Z","end_local":"23:30","hours":2.08,"label":"marginal","mean_quality":0.51,"start":"2027-02-21T19:25Z","start_local":"21:25"},{"end":"2027-02-21T21:40Z","end_local":"23:40","hours":0.17,"label":"poor","mean_quality":0.29,"start":"2027-02-21T21:30Z","start_local":"23:30"},{"end":"2027-02-22T05:10Z","end_local":"07:10","hours":7.5,"label":"unusable","mean_quality":0.0,"start":"2027-02-21T21:40Z","start_local":"23:40"}]}],"unscheduled":[],"warnings":[]}
