{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2026-04-06","schedule":[{"end":"2026-04-06T17:55Z","end_local":"20:55","hours":1.08,"mean_quality":0.0,"start":"2026-04-06T16:50Z","start_local":"19:50","target":null},{"end":"2026-04-06T18:00Z","end_local":"21:00","hours":0.08,"mean_quality":0.38,"start":"2026-04-06T17:55Z","start_local":"20:55","target":"M45"},{"end":"2026-04-06T18:30Z","end_local":"21:30","hours":0.5,"mean_quality":0.0,"start":"2026-04-06T18:00Z","start_local":"21:00","target":null},{"end":"2026-04-06T18:50Z","end_local":"21:50","hours":0.33,"mean_quality":0.34,"start":"2026-04-06T18:30Z","start_local":"21:30","target":"M45"},{"end":"2026-04-07T03:55Z","end_local":"06:55","hours":9.08,"mean_quality":0.0,"start":"2026-04-06T18:50Z","start_local":"21:50","target":null}],"targets":[{"best_window":{"end":"2026-04-06T18:50Z","end_local":"21:50","hours":0.33,"label":"marginal","mean_quality":0.34,"start":"2026-04-06T18:30Z","start_local":"21:30"},"dec":24.17805556,"moon_separation":168.5,"name":"M45","quality_hours":0.33,"ra":56.65833333,"resolved":{"common_name":"Seven Sisters","dec":24.17805556,"name":"Cl Melotte 22","ra":56.65833333,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=M45","source":"sesame","type":"OpC","type_text":"open cluster"},"score":4,"score_astronomy":5,"score_weather":80,"transit":{"airmass":1.05,"alt":72.6,"az":180.1,"t":"2026-04-06T13:10Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2026-04-06T17:25Z","end_local":"20:25","hours":0.58,"label":"unusable","mean_quality":0.0,"start":"2026-04-06T16:50Z","start_local":"19:50"},{"end":"2026-04-06T17:55Z","end_local":"20:55","hours":0.5,"label":"poor","mean_quality":0.12,"start":"2026-04-06T17:25Z","start_local":"20:25"},{"end":"2026-04-06T18:00Z","end_local":"21:00","hours":0.08,"label":"marginal","mean_quality":0.38,"start":"2026-04-06T17:55Z","start_local":"20:55"},{"end":"2026-04-06T18:30Z","end_local":"21:30","hours":0.5,"label":"poor","mean_quality":0.24,"start":"2026-04-06T18:00Z","start_local":"21:00"},{"end":"2026-04-06T18:50Z","end_local":"21:50","hours":0.33,"label":"marginal","mean_quality":0.34,"start":"2026-04-06T18:30Z","start_local":"21:30"},{"end":"2026-04-07T03:55Z","end_local":"06:55","hours":9.08,"label":"unusable","mean_quality":0.0,"start":"2026-04-06T18:50Z","start_local":"21:50"}]}],"unscheduled":[],"warnings":[]}