{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-05-21","schedule":[{"end":"2025-05-21T20:00Z","end_local":"23:00","hours":2.42,"mean_quality":0.0,"start":"2025-05-21T17:35Z","start_local":"20:35","target":null},{"end":"2025-05-22T01:00Z","end_local":"04:00","hours":5.0,"mean_quality":0.72,"start":"2025-05-21T20:00Z","start_local":"23:00","target":"Vega"},{"end":"2025-05-22T03:00Z","end_local":"06:00","hours":2.0,"mean_quality":0.0,"start":"2025-05-22T01:00Z","start_local":"04:00","target":null}],"targets":[{"best_window":{"end":"2025-05-21T23:00Z","end_local":"02:00","hours":3.0,"label":"good","mean_quality":0.85,"start":"2025-05-21T20:00Z","start_local":"23:00"},"dec":38.78368896,"moon_separation":78.5,"name":"Vega","quality_hours":3.89,"ra":279.23473479,"resolved":{"common_name":"Vega","dec":38.78368896,"name":"* alf Lyr","ra":279.23473479,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=Vega","source":"sesame","spectral_type":"A0V","type":"dS*","type_text":"delta Scuti variable","vmag":0.03},"score":68,"score_astronomy":100,"score_weather":68,"transit":{"airmass":1.0,"alt":87.1,"az":183.2,"t":"2025-05-22T01:00Z"},"verdict":"marginal","weather_known":true,"windows":[{"end":"2025-05-21T20:00Z","end_local":"23:00","hours":2.42,"label":"unusable","mean_quality":0.0,"start":"2025-05-21T17:35Z","start_local":"20:35"},{"end":"2025-05-21T23:00Z","end_local":"02:00","hours":3.0,"label":"good","mean_quality":0.85,"start":"2025-05-21T20:00Z","start_local":"23:00"},{"end":"2025-05-22T00:00Z","end_local":"03:00","hours":1.0,"label":"marginal","mean_quality":0.41,"start":"2025-05-21T23:00Z","start_local":"02:00"},{"end":"2025-05-22T01:00Z","end_local":"04:00","hours":1.0,"label":"good","mean_quality":0.65,"start":"2025-05-22T00:00Z","start_local":"03:00"},{"end":"2025-05-22T02:25Z","end_local":"05:25","hours":1.42,"label":"poor","mean_quality":0.2,"start":"2025-05-22T01:00Z","start_local":"04:00"},{"end":"2025-05-22T03:00Z","end_local":"06:00","hours":0.58,"label":"unusable","mean_quality":0.0,"start":"2025-05-22T02:25Z","start_local":"05:25"}]}],"unscheduled":[],"warnings":[]}