{"calculation_version":"2026-10-10.1","forecast_source":"none","night_date":"2028-05-22","schedule":[{"end":"2028-05-22T20:50Z","end_local":"23:50","hours":3.17,"mean_quality":0.0,"start":"2028-05-22T17:40Z","start_local":"20:40","target":null},{"end":"2028-05-23T01:45Z","end_local":"04:45","hours":4.92,"mean_quality":0.79,"start":"2028-05-22T20:50Z","start_local":"23:50","target":"HD 189733"},{"end":"2028-05-23T02:55Z","end_local":"05:55","hours":1.17,"mean_quality":0.0,"start":"2028-05-23T01:45Z","start_local":"04:45","target":null}],"targets":[{"best_window":{"end":"2028-05-23T00:55Z","end_local":"03:55","hours":3.67,"label":"good","mean_quality":0.89,"start":"2028-05-22T21:15Z","start_local":"00:15"},"dec":22.71085365,"moon_separation":91.5,"name":"HD 189733","quality_hours":3.97,"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":null,"score_astronomy":99,"score_weather":null,"transit":{"airmass":1.06,"alt":71.1,"az":181.4,"t":"2028-05-23T02:20Z"},"verdict":"unknown","weather_known":false,"windows":[{"end":"2028-05-22T20:50Z","end_local":"23:50","hours":3.17,"label":"unusable","mean_quality":0.0,"start":"2028-05-22T17:40Z","start_local":"20:40"},{"end":"2028-05-22T21:15Z","end_local":"00:15","hours":0.42,"label":"marginal","mean_quality":0.49,"start":"2028-05-22T20:50Z","start_local":"23:50"},{"end":"2028-05-23T00:55Z","end_local":"03:55","hours":3.67,"label":"good","mean_quality":0.89,"start":"2028-05-22T21:15Z","start_local":"00:15"},{"end":"2028-05-23T01:45Z","end_local":"04:45","hours":0.83,"label":"marginal","mean_quality":0.5,"start":"2028-05-23T00:55Z","start_local":"03:55"},{"end":"2028-05-23T02:25Z","end_local":"05:25","hours":0.67,"label":"poor","mean_quality":0.15,"start":"2028-05-23T01:45Z","start_local":"04:45"},{"end":"2028-05-23T02:55Z","end_local":"05:55","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2028-05-23T02:25Z","start_local":"05:25"}]}],"unscheduled":[],"warnings":[]}