{"calculation_version":"2026-10-10.1","forecast_source":"none","night_date":"2027-03-21","schedule":[{"end":"2027-03-21T17:35Z","end_local":"19:35","hours":1.08,"mean_quality":0.0,"start":"2027-03-21T16:30Z","start_local":"18:30","target":null},{"end":"2027-03-21T19:50Z","end_local":"21:50","hours":2.25,"mean_quality":0.55,"start":"2027-03-21T17:35Z","start_local":"19:35","target":"M45"},{"end":"2027-03-22T04:25Z","end_local":"06:25","hours":8.58,"mean_quality":0.0,"start":"2027-03-21T19:50Z","start_local":"21:50","target":null}],"targets":[{"best_window":{"end":"2027-03-21T19:10Z","end_local":"21:10","hours":1.0,"label":"good","mean_quality":0.69,"start":"2027-03-21T18:10Z","start_local":"20:10"},"dec":24.11388889,"moon_separation":114.7,"name":"M45","quality_hours":1.29,"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":24,"score_weather":null,"transit":{"airmass":1.05,"alt":72.5,"az":181.1,"t":"2027-03-21T14:15Z"},"verdict":"unknown","weather_known":false,"windows":[{"end":"2027-03-21T17:05Z","end_local":"19:05","hours":0.58,"label":"unusable","mean_quality":0.0,"start":"2027-03-21T16:30Z","start_local":"18:30"},{"end":"2027-03-21T17:35Z","end_local":"19:35","hours":0.5,"label":"poor","mean_quality":0.12,"start":"2027-03-21T17:05Z","start_local":"19:05"},{"end":"2027-03-21T18:10Z","end_local":"20:10","hours":0.58,"label":"marginal","mean_quality":0.38,"start":"2027-03-21T17:35Z","start_local":"19:35"},{"end":"2027-03-21T19:10Z","end_local":"21:10","hours":1.0,"label":"good","mean_quality":0.69,"start":"2027-03-21T18:10Z","start_local":"20:10"},{"end":"2027-03-21T19:50Z","end_local":"21:50","hours":0.67,"label":"marginal","mean_quality":0.47,"start":"2027-03-21T19:10Z","start_local":"21:10"},{"end":"2027-03-22T04:25Z","end_local":"06:25","hours":8.58,"label":"unusable","mean_quality":0.0,"start":"2027-03-21T19:50Z","start_local":"21:50"}]}],"unscheduled":[],"warnings":[]}