{"calculation_version":"2026-10-10.1","forecast_source":"none","night_date":"2027-09-09","schedule":[{"end":"2027-09-09T21:20Z","end_local":"00:20","hours":4.67,"mean_quality":0.0,"start":"2027-09-09T16:40Z","start_local":"19:40","target":null},{"end":"2027-09-10T02:55Z","end_local":"05:55","hours":5.58,"mean_quality":0.83,"start":"2027-09-09T21:20Z","start_local":"00:20","target":"M45"},{"end":"2027-09-10T04:00Z","end_local":"07:00","hours":1.08,"mean_quality":0.0,"start":"2027-09-10T02:55Z","start_local":"05:55","target":null}],"targets":[{"best_window":{"end":"2027-09-10T02:20Z","end_local":"05:20","hours":4.42,"label":"good","mean_quality":0.92,"start":"2027-09-09T21:55Z","start_local":"00:55"},"dec":24.11388889,"moon_separation":138.8,"name":"M45","quality_hours":4.72,"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":null,"score_astronomy":100,"score_weather":null,"transit":{"airmass":1.05,"alt":72.5,"az":181.2,"t":"2027-09-10T02:55Z"},"verdict":"unknown","weather_known":false,"windows":[{"end":"2027-09-09T21:20Z","end_local":"00:20","hours":4.67,"label":"unusable","mean_quality":0.0,"start":"2027-09-09T16:40Z","start_local":"19:40"},{"end":"2027-09-09T21:55Z","end_local":"00:55","hours":0.58,"label":"marginal","mean_quality":0.49,"start":"2027-09-09T21:20Z","start_local":"00:20"},{"end":"2027-09-10T02:20Z","end_local":"05:20","hours":4.42,"label":"good","mean_quality":0.92,"start":"2027-09-09T21:55Z","start_local":"00:55"},{"end":"2027-09-10T02:55Z","end_local":"05:55","hours":0.58,"label":"marginal","mean_quality":0.5,"start":"2027-09-10T02:20Z","start_local":"05:20"},{"end":"2027-09-10T03:30Z","end_local":"06:30","hours":0.58,"label":"poor","mean_quality":0.15,"start":"2027-09-10T02:55Z","start_local":"05:55"},{"end":"2027-09-10T04:00Z","end_local":"07:00","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2027-09-10T03:30Z","start_local":"06:30"}]}],"unscheduled":[],"warnings":[]}