{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2026-02-28","schedule":[{"end":"2026-03-01T02:20Z","end_local":"04:20","hours":10.17,"mean_quality":0.0,"start":"2026-02-28T16:10Z","start_local":"18:10","target":null},{"end":"2026-03-01T04:00Z","end_local":"06:00","hours":1.67,"mean_quality":0.52,"start":"2026-03-01T02:20Z","start_local":"04:20","target":"HD 189733"},{"end":"2026-03-01T05:00Z","end_local":"07:00","hours":1.0,"mean_quality":0.0,"start":"2026-03-01T04:00Z","start_local":"06:00","target":null}],"targets":[{"best_window":{"end":"2026-03-01T03:25Z","end_local":"05:25","hours":0.5,"label":"good","mean_quality":0.7,"start":"2026-03-01T02:55Z","start_local":"04:55"},"dec":22.71085365,"moon_separation":135.1,"name":"HD 189733","quality_hours":0.93,"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":17,"score_astronomy":17,"score_weather":100,"transit":{"airmass":1.06,"alt":71.1,"az":179.0,"t":"2026-03-01T07:45Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2026-03-01T02:20Z","end_local":"04:20","hours":10.17,"label":"unusable","mean_quality":0.0,"start":"2026-02-28T16:10Z","start_local":"18:10"},{"end":"2026-03-01T02:55Z","end_local":"04:55","hours":0.58,"label":"marginal","mean_quality":0.49,"start":"2026-03-01T02:20Z","start_local":"04:20"},{"end":"2026-03-01T03:25Z","end_local":"05:25","hours":0.5,"label":"good","mean_quality":0.7,"start":"2026-03-01T02:55Z","start_local":"04:55"},{"end":"2026-03-01T04:00Z","end_local":"06:00","hours":0.58,"label":"marginal","mean_quality":0.39,"start":"2026-03-01T03:25Z","start_local":"05:25"},{"end":"2026-03-01T04:30Z","end_local":"06:30","hours":0.5,"label":"poor","mean_quality":0.13,"start":"2026-03-01T04:00Z","start_local":"06:00"},{"end":"2026-03-01T05:00Z","end_local":"07:00","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2026-03-01T04:30Z","start_local":"06:30"}]}],"unscheduled":[],"warnings":[]}