{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-04-23","schedule":[{"end":"2025-04-23T23:00Z","end_local":"02:00","hours":5.83,"mean_quality":0.0,"start":"2025-04-23T17:10Z","start_local":"20:10","target":null},{"end":"2025-04-24T01:45Z","end_local":"04:45","hours":2.75,"mean_quality":0.62,"start":"2025-04-23T23:00Z","start_local":"02:00","target":"HD 189733"},{"end":"2025-04-24T02:00Z","end_local":"05:00","hours":0.25,"mean_quality":0.0,"start":"2025-04-24T01:45Z","start_local":"04:45","target":null},{"end":"2025-04-24T02:25Z","end_local":"05:25","hours":0.42,"mean_quality":0.35,"start":"2025-04-24T02:00Z","start_local":"05:00","target":"HD 189733"},{"end":"2025-04-24T03:30Z","end_local":"06:30","hours":1.08,"mean_quality":0.0,"start":"2025-04-24T02:25Z","start_local":"05:25","target":null}],"targets":[{"best_window":{"end":"2025-04-24T01:00Z","end_local":"04:00","hours":1.0,"label":"good","mean_quality":0.78,"start":"2025-04-24T00:00Z","start_local":"03:00"},"dec":22.71085365,"moon_separation":52.0,"name":"HD 189733","quality_hours":2.04,"ra":300.18213726,"resolved":{"dec":22.71085365,"name":"HD 189733","ra":300.18213726,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=HD%20189733","source":"sesame","spectral_type":"K2V","type":"BY*","type_text":"BY Draconis variable \u2014 a spotted, rotating star","vmag":7.648},"score":49,"score_astronomy":66,"score_weather":74,"transit":{"airmass":1.06,"alt":71.1,"az":181.4,"t":"2025-04-24T04:15Z"},"verdict":"marginal","weather_known":true,"windows":[{"end":"2025-04-23T22:45Z","end_local":"01:45","hours":5.58,"label":"unusable","mean_quality":0.0,"start":"2025-04-23T17:10Z","start_local":"20:10"},{"end":"2025-04-23T23:00Z","end_local":"02:00","hours":0.25,"label":"poor","mean_quality":0.22,"start":"2025-04-23T22:45Z","start_local":"01:45"},{"end":"2025-04-24T00:00Z","end_local":"03:00","hours":1.0,"label":"marginal","mean_quality":0.47,"start":"2025-04-23T23:00Z","start_local":"02:00"},{"end":"2025-04-24T01:00Z","end_local":"04:00","hours":1.0,"label":"good","mean_quality":0.78,"start":"2025-04-24T00:00Z","start_local":"03:00"},{"end":"2025-04-24T01:10Z","end_local":"04:10","hours":0.17,"label":"marginal","mean_quality":0.59,"start":"2025-04-24T01:00Z","start_local":"04:00"},{"end":"2025-04-24T01:45Z","end_local":"04:45","hours":0.58,"label":"good","mean_quality":0.61,"start":"2025-04-24T01:10Z","start_local":"04:10"},{"end":"2025-04-24T02:00Z","end_local":"05:00","hours":0.25,"label":"poor","mean_quality":0.29,"start":"2025-04-24T01:45Z","start_local":"04:45"},{"end":"2025-04-24T02:25Z","end_local":"05:25","hours":0.42,"label":"marginal","mean_quality":0.35,"start":"2025-04-24T02:00Z","start_local":"05:00"},{"end":"2025-04-24T03:00Z","end_local":"06:00","hours":0.58,"label":"poor","mean_quality":0.11,"start":"2025-04-24T02:25Z","start_local":"05:25"},{"end":"2025-04-24T03:30Z","end_local":"06:30","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2025-04-24T03:00Z","start_local":"06:00"}]}],"unscheduled":[],"warnings":[]}