{"calculation_version":"2026-10-10.1","forecast_source":"none","night_date":"2027-09-12","schedule":[{"end":"2027-09-12T21:10Z","end_local":"00:10","hours":4.58,"mean_quality":0.0,"start":"2027-09-12T16:35Z","start_local":"19:35","target":null},{"end":"2027-09-13T03:00Z","end_local":"06:00","hours":5.83,"mean_quality":0.75,"start":"2027-09-12T21:10Z","start_local":"00:10","target":"M45"},{"end":"2027-09-13T04:00Z","end_local":"07:00","hours":1.0,"mean_quality":0.0,"start":"2027-09-13T03:00Z","start_local":"06:00","target":null}],"targets":[{"best_window":{"end":"2027-09-13T02:25Z","end_local":"05:25","hours":4.5,"label":"good","mean_quality":0.83,"start":"2027-09-12T21:55Z","start_local":"00:55"},"dec":24.11388889,"moon_separation":103.3,"name":"M45","quality_hours":4.45,"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":178.8,"t":"2027-09-13T02:40Z"},"verdict":"unknown","weather_known":false,"windows":[{"end":"2027-09-12T21:10Z","end_local":"00:10","hours":4.58,"label":"unusable","mean_quality":0.0,"start":"2027-09-12T16:35Z","start_local":"19:35"},{"end":"2027-09-12T21:55Z","end_local":"00:55","hours":0.75,"label":"marginal","mean_quality":0.47,"start":"2027-09-12T21:10Z","start_local":"00:10"},{"end":"2027-09-13T02:25Z","end_local":"05:25","hours":4.5,"label":"good","mean_quality":0.83,"start":"2027-09-12T21:55Z","start_local":"00:55"},{"end":"2027-09-13T03:00Z","end_local":"06:00","hours":0.58,"label":"marginal","mean_quality":0.5,"start":"2027-09-13T02:25Z","start_local":"05:25"},{"end":"2027-09-13T03:35Z","end_local":"06:35","hours":0.58,"label":"poor","mean_quality":0.15,"start":"2027-09-13T03:00Z","start_local":"06:00"},{"end":"2027-09-13T04:00Z","end_local":"07:00","hours":0.42,"label":"unusable","mean_quality":0.0,"start":"2027-09-13T03:35Z","start_local":"06:35"}]}],"unscheduled":[],"warnings":[]}