{"calculation_version":"2026-10-10.1","forecast_source":"none","night_date":"2027-08-20","schedule":[{"end":"2027-08-20T23:05Z","end_local":"02:05","hours":5.92,"mean_quality":0.0,"start":"2027-08-20T17:10Z","start_local":"20:10","target":null},{"end":"2027-08-21T01:55Z","end_local":"04:55","hours":2.83,"mean_quality":0.42,"start":"2027-08-20T23:05Z","start_local":"02:05","target":"M45"},{"end":"2027-08-21T03:40Z","end_local":"06:40","hours":1.75,"mean_quality":0.0,"start":"2027-08-21T01:55Z","start_local":"04:55","target":null}],"targets":[{"best_window":{"end":"2027-08-21T01:55Z","end_local":"04:55","hours":2.83,"label":"marginal","mean_quality":0.42,"start":"2027-08-20T23:05Z","start_local":"02:05"},"dec":24.11388889,"moon_separation":51.7,"name":"M45","quality_hours":1.49,"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":18,"score_weather":null,"transit":{"airmass":1.05,"alt":72.5,"az":178.5,"t":"2027-08-21T04:10Z"},"verdict":"unknown","weather_known":false,"windows":[{"end":"2027-08-20T22:40Z","end_local":"01:40","hours":5.5,"label":"unusable","mean_quality":0.0,"start":"2027-08-20T17:10Z","start_local":"20:10"},{"end":"2027-08-20T23:05Z","end_local":"02:05","hours":0.42,"label":"poor","mean_quality":0.25,"start":"2027-08-20T22:40Z","start_local":"01:40"},{"end":"2027-08-21T01:55Z","end_local":"04:55","hours":2.83,"label":"marginal","mean_quality":0.42,"start":"2027-08-20T23:05Z","start_local":"02:05"},{"end":"2027-08-21T03:10Z","end_local":"06:10","hours":1.25,"label":"poor","mean_quality":0.17,"start":"2027-08-21T01:55Z","start_local":"04:55"},{"end":"2027-08-21T03:40Z","end_local":"06:40","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2027-08-21T03:10Z","start_local":"06:10"}]}],"unscheduled":[],"warnings":[]}