{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2026-05-23","schedule":[{"end":"2026-05-24T02:55Z","end_local":"05:55","hours":9.25,"mean_quality":0.0,"start":"2026-05-23T17:40Z","start_local":"20:40","target":null}],"targets":[{"best_window":null,"dec":41.26875,"moon_separation":123.1,"name":"M31","quality_hours":0.03,"ra":10.68470833,"resolved":{"common_name":"Andromeda Galaxy","dec":41.26875,"morphology":"SA(s)b","name":"M 31","ra":10.68470833,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=M31","source":"sesame","type":"AGN","type_text":"galaxy with an active nucleus","vmag":3.44},"score":0,"score_astronomy":10,"score_weather":4,"transit":{"airmass":1.0,"alt":89.5,"az":237.7,"t":"2026-05-24T07:00Z"},"verdict":"unusable","weather_known":true,"windows":[{"end":"2026-05-24T02:00Z","end_local":"05:00","hours":8.33,"label":"unusable","mean_quality":0.0,"start":"2026-05-23T17:40Z","start_local":"20:40"},{"end":"2026-05-24T02:25Z","end_local":"05:25","hours":0.42,"label":"poor","mean_quality":0.07,"start":"2026-05-24T02:00Z","start_local":"05:00"},{"end":"2026-05-24T02:55Z","end_local":"05:55","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2026-05-24T02:25Z","start_local":"05:25"}]}],"unscheduled":[{"name":"M31","why":"no usable window tonight"}],"warnings":[]}