{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-07-18","schedule":[{"end":"2025-07-18T20:40Z","end_local":"23:40","hours":2.83,"mean_quality":0.0,"start":"2025-07-18T17:50Z","start_local":"20:50","target":null},{"end":"2025-07-19T01:05Z","end_local":"04:05","hours":4.42,"mean_quality":0.67,"start":"2025-07-18T20:40Z","start_local":"23:40","target":"M31"},{"end":"2025-07-19T03:05Z","end_local":"06:05","hours":2.0,"mean_quality":0.0,"start":"2025-07-19T01:05Z","start_local":"04:05","target":null}],"targets":[{"best_window":{"end":"2025-07-19T01:00Z","end_local":"04:00","hours":3.67,"label":"good","mean_quality":0.71,"start":"2025-07-18T21:20Z","start_local":"00:20"},"dec":41.26875,"moon_separation":31.1,"name":"M31","quality_hours":3.17,"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":64,"score_astronomy":70,"score_weather":92,"transit":{"airmass":1.0,"alt":89.6,"az":135.7,"t":"2025-07-19T03:15Z"},"verdict":"marginal","weather_known":true,"windows":[{"end":"2025-07-18T20:40Z","end_local":"23:40","hours":2.83,"label":"unusable","mean_quality":0.0,"start":"2025-07-18T17:50Z","start_local":"20:50"},{"end":"2025-07-18T21:20Z","end_local":"00:20","hours":0.67,"label":"marginal","mean_quality":0.49,"start":"2025-07-18T20:40Z","start_local":"23:40"},{"end":"2025-07-19T01:00Z","end_local":"04:00","hours":3.67,"label":"good","mean_quality":0.71,"start":"2025-07-18T21:20Z","start_local":"00:20"},{"end":"2025-07-19T01:05Z","end_local":"04:05","hours":0.08,"label":"marginal","mean_quality":0.5,"start":"2025-07-19T01:00Z","start_local":"04:00"},{"end":"2025-07-19T02:35Z","end_local":"05:35","hours":1.5,"label":"poor","mean_quality":0.14,"start":"2025-07-19T01:05Z","start_local":"04:05"},{"end":"2025-07-19T03:05Z","end_local":"06:05","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2025-07-19T02:35Z","start_local":"05:35"}]}],"unscheduled":[],"warnings":[]}