{"calculation_version":"2026-10-10.1","forecast_source":"none","night_date":"2027-03-30","schedule":[{"end":"2027-03-31T00:20Z","end_local":"03:20","hours":7.67,"mean_quality":0.0,"start":"2027-03-30T16:40Z","start_local":"19:40","target":null},{"end":"2027-03-31T03:10Z","end_local":"06:10","hours":2.83,"mean_quality":0.6,"start":"2027-03-31T00:20Z","start_local":"03:20","target":"HD 189733"},{"end":"2027-03-31T04:10Z","end_local":"07:10","hours":1.0,"mean_quality":0.0,"start":"2027-03-31T03:10Z","start_local":"06:10","target":null}],"targets":[{"best_window":{"end":"2027-03-31T02:35Z","end_local":"05:35","hours":1.75,"label":"good","mean_quality":0.7,"start":"2027-03-31T00:50Z","start_local":"03:50"},"dec":22.71085365,"moon_separation":47.9,"name":"HD 189733","quality_hours":1.76,"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":33,"score_weather":null,"transit":{"airmass":1.06,"alt":71.1,"az":180.4,"t":"2027-03-31T05:50Z"},"verdict":"unknown","weather_known":false,"windows":[{"end":"2027-03-31T00:20Z","end_local":"03:20","hours":7.67,"label":"unusable","mean_quality":0.0,"start":"2027-03-30T16:40Z","start_local":"19:40"},{"end":"2027-03-31T00:50Z","end_local":"03:50","hours":0.5,"label":"marginal","mean_quality":0.5,"start":"2027-03-31T00:20Z","start_local":"03:20"},{"end":"2027-03-31T02:35Z","end_local":"05:35","hours":1.75,"label":"good","mean_quality":0.7,"start":"2027-03-31T00:50Z","start_local":"03:50"},{"end":"2027-03-31T03:10Z","end_local":"06:10","hours":0.58,"label":"marginal","mean_quality":0.38,"start":"2027-03-31T02:35Z","start_local":"05:35"},{"end":"2027-03-31T03:40Z","end_local":"06:40","hours":0.5,"label":"poor","mean_quality":0.12,"start":"2027-03-31T03:10Z","start_local":"06:10"},{"end":"2027-03-31T04:10Z","end_local":"07:10","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2027-03-31T03:40Z","start_local":"06:40"}]}],"unscheduled":[],"warnings":[]}