{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-10-18","schedule":[{"end":"2025-10-19T04:40Z","end_local":"07:40","hours":13.08,"mean_quality":0.0,"start":"2025-10-18T15:35Z","start_local":"18:35","target":null}],"targets":[{"best_window":null,"dec":41.26875,"moon_separation":136.4,"name":"M31","quality_hours":0.1,"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":1,"score_astronomy":100,"score_weather":1,"transit":{"airmass":1.0,"alt":89.7,"az":189.0,"t":"2025-10-18T21:15Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2025-10-19T03:00Z","end_local":"06:00","hours":11.42,"label":"unusable","mean_quality":0.0,"start":"2025-10-18T15:35Z","start_local":"18:35"},{"end":"2025-10-19T03:55Z","end_local":"06:55","hours":0.92,"label":"poor","mean_quality":0.11,"start":"2025-10-19T03:00Z","start_local":"06:00"},{"end":"2025-10-19T04:40Z","end_local":"07:40","hours":0.75,"label":"unusable","mean_quality":0.0,"start":"2025-10-19T03:55Z","start_local":"06:55"}]}],"unscheduled":[{"name":"M31","why":"Overcast (\u226580 % cloud) for 10.9 of 12.1 dark hours \u2014 the sky is closed whatever the geometry says."}],"warnings":[]}
