{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-09-12","schedule":[{"end":"2025-09-12T17:40Z","end_local":"20:40","hours":1.08,"mean_quality":0.0,"start":"2025-09-12T16:35Z","start_local":"19:35","target":null},{"end":"2025-09-12T18:15Z","end_local":"21:15","hours":0.58,"mean_quality":0.42,"start":"2025-09-12T17:40Z","start_local":"20:40","target":"NGC 7000"},{"end":"2025-09-12T18:50Z","end_local":"21:50","hours":0.58,"mean_quality":0.96,"start":"2025-09-12T18:15Z","start_local":"21:15","target":"V1057 Cyg"},{"end":"2025-09-12T19:00Z","end_local":"22:00","hours":0.17,"mean_quality":0.82,"start":"2025-09-12T18:50Z","start_local":"21:50","target":"M31"},{"end":"2025-09-13T01:00Z","end_local":"04:00","hours":6.0,"mean_quality":0.0,"start":"2025-09-12T19:00Z","start_local":"22:00","target":null},{"end":"2025-09-13T01:30Z","end_local":"04:30","hours":0.5,"mean_quality":0.5,"start":"2025-09-13T01:00Z","start_local":"04:00","target":"M31"},{"end":"2025-09-13T02:05Z","end_local":"05:05","hours":0.58,"mean_quality":0.45,"start":"2025-09-13T01:30Z","start_local":"04:30","target":"M33"},{"end":"2025-09-13T02:25Z","end_local":"05:25","hours":0.33,"mean_quality":0.47,"start":"2025-09-13T02:05Z","start_local":"05:05","target":"M45"},{"end":"2025-09-13T04:00Z","end_local":"07:00","hours":1.58,"mean_quality":0.0,"start":"2025-09-13T02:25Z","start_local":"05:25","target":null}],"targets":[{"best_window":{"end":"2025-09-12T19:00Z","end_local":"22:00","hours":0.75,"label":"good","mean_quality":0.8,"start":"2025-09-12T18:15Z","start_local":"21:15"},"dec":41.26875,"moon_separation":41.4,"name":"M31","quality_hours":1.72,"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":26,"score_astronomy":86,"score_weather":31,"transit":{"airmass":1.0,"alt":89.6,"az":139.2,"t":"2025-09-12T23:35Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2025-09-12T17:05Z","end_local":"20:05","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2025-09-12T16:35Z","start_local":"19:35"},{"end":"2025-09-12T18:00Z","end_local":"21:00","hours":0.92,"label":"poor","mean_quality":0.14,"start":"2025-09-12T17:05Z","start_local":"20:05"},{"end":"2025-09-12T18:15Z","end_local":"21:15","hours":0.25,"label":"marginal","mean_quality":0.38,"start":"2025-09-12T18:00Z","start_local":"21:00"},{"end":"2025-09-12T19:00Z","end_local":"22:00","hours":0.75,"label":"good","mean_quality":0.8,"start":"2025-09-12T18:15Z","start_local":"21:15"},{"end":"2025-09-13T01:00Z","end_local":"04:00","hours":6.0,"label":"unusable","mean_quality":0.0,"start":"2025-09-12T19:00Z","start_local":"22:00"},{"end":"2025-09-13T02:25Z","end_local":"05:25","hours":1.42,"label":"marginal","mean_quality":0.5,"start":"2025-09-13T01:00Z","start_local":"04:00"},{"end":"2025-09-13T03:35Z","end_local":"06:35","hours":1.17,"label":"poor","mean_quality":0.16,"start":"2025-09-13T02:25Z","start_local":"05:25"},{"end":"2025-09-13T04:00Z","end_local":"07:00","hours":0.42,"label":"unusable","mean_quality":0.0,"start":"2025-09-13T03:35Z","start_local":"06:35"}]},{"best_window":{"end":"2025-09-13T02:25Z","end_local":"05:25","hours":1.17,"label":"marginal","mean_quality":0.38,"start":"2025-09-13T01:15Z","start_local":"04:15"},"dec":-5.3876,"moon_separation":40.1,"name":"M42","quality_hours":0.68,"ra":83.8201,"resolved":{"common_name":"Great Orion Nebula","dec":-5.3876,"name":"M 42","ra":83.8201,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=M42","source":"sesame","type":"HII","type_text":"HII region \u2014 a star-forming nebula"},"score":7,"score_astronomy":8,"score_weather":87,"transit":{"airmass":1.47,"alt":42.9,"az":180.7,"t":"2025-09-13T04:30Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2025-09-13T01:00Z","end_local":"04:00","hours":8.42,"label":"unusable","mean_quality":0.0,"start":"2025-09-12T16:35Z","start_local":"19:35"},{"end":"2025-09-13T01:15Z","end_local":"04:15","hours":0.25,"label":"poor","mean_quality":0.28,"start":"2025-09-13T01:00Z","start_local":"04:00"},{"end":"2025-09-13T02:25Z","end_local":"05:25","hours":1.17,"label":"marginal","mean_quality":0.38,"start":"2025-09-13T01:15Z","start_local":"04:15"},{"end":"2025-09-13T03:35Z","end_local":"06:35","hours":1.17,"label":"poor","mean_quality":0.14,"start":"2025-09-13T02:25Z","start_local":"05:25"},{"end":"2025-09-13T04:00Z","end_local":"07:00","hours":0.42,"label":"unusable","mean_quality":0.0,"start":"2025-09-13T03:35Z","start_local":"06:35"}]},{"best_window":{"end":"2025-09-13T02:25Z","end_local":"05:25","hours":1.42,"label":"marginal","mean_quality":0.45,"start":"2025-09-13T01:00Z","start_local":"04:00"},"dec":24.11388889,"moon_separation":1.1,"name":"M45","quality_hours":0.82,"ra":56.60083333,"resolved":{"common_name":"Seven Sisters","dec":24.11388889,"name":"Cl Melotte 22","ra":56.60083333,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=M45","source":"sesame","type":"OpC","type_text":"open cluster"},"score":10,"score_astronomy":33,"score_weather":31,"transit":{"airmass":1.05,"alt":72.5,"az":180.3,"t":"2025-09-13T02:40Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2025-09-13T01:00Z","end_local":"04:00","hours":8.42,"label":"unusable","mean_quality":0.0,"start":"2025-09-12T16:35Z","start_local":"19:35"},{"end":"2025-09-13T02:25Z","end_local":"05:25","hours":1.42,"label":"marginal","mean_quality":0.45,"start":"2025-09-13T01:00Z","start_local":"04:00"},{"end":"2025-09-13T03:35Z","end_local":"06:35","hours":1.17,"label":"poor","mean_quality":0.15,"start":"2025-09-13T02:25Z","start_local":"05:25"},{"end":"2025-09-13T04:00Z","end_local":"07:00","hours":0.42,"label":"unusable","mean_quality":0.0,"start":"2025-09-13T03:35Z","start_local":"06:35"}]},{"best_window":{"end":"2025-09-12T19:00Z","end_local":"22:00","hours":0.75,"label":"good","mean_quality":0.96,"start":"2025-09-12T18:15Z","start_local":"21:15"},"dec":44.33,"moon_separation":80.9,"name":"NGC 7000","quality_hours":1.78,"ra":314.69583333,"resolved":{"common_name":"North America Nebula","dec":44.33,"name":"NGC 7000","ra":314.69583333,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=NGC%207000","source":"sesame","type":"Cl*","type_text":"star cluster"},"score":27,"score_astronomy":100,"score_weather":27,"transit":{"airmass":1.0,"alt":87.2,"az":9.2,"t":"2025-09-12T19:50Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2025-09-12T17:05Z","end_local":"20:05","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2025-09-12T16:35Z","start_local":"19:35"},{"end":"2025-09-12T17:40Z","end_local":"20:40","hours":0.58,"label":"poor","mean_quality":0.11,"start":"2025-09-12T17:05Z","start_local":"20:05"},{"end":"2025-09-12T18:15Z","end_local":"21:15","hours":0.58,"label":"marginal","mean_quality":0.42,"start":"2025-09-12T17:40Z","start_local":"20:40"},{"end":"2025-09-12T19:00Z","end_local":"22:00","hours":0.75,"label":"good","mean_quality":0.96,"start":"2025-09-12T18:15Z","start_local":"21:15"},{"end":"2025-09-13T01:00Z","end_local":"04:00","hours":6.0,"label":"unusable","mean_quality":0.0,"start":"2025-09-12T19:00Z","start_local":"22:00"},{"end":"2025-09-13T02:25Z","end_local":"05:25","hours":1.42,"label":"marginal","mean_quality":0.49,"start":"2025-09-13T01:00Z","start_local":"04:00"},{"end":"2025-09-13T02:45Z","end_local":"05:45","hours":0.33,"label":"poor","mean_quality":0.16,"start":"2025-09-13T02:25Z","start_local":"05:25"},{"end":"2025-09-13T04:00Z","end_local":"07:00","hours":1.25,"label":"unusable","mean_quality":0.0,"start":"2025-09-13T02:45Z","start_local":"05:45"}]},{"best_window":{"end":"2025-09-12T19:00Z","end_local":"22:00","hours":0.75,"label":"good","mean_quality":0.96,"start":"2025-09-12T18:15Z","start_local":"21:15"},"dec":44.25788576,"moon_separation":80.9,"name":"V1057 Cyg","quality_hours":1.78,"ra":314.72388973,"resolved":{"dec":44.25788576,"name":"EM* LkHA 190","ra":314.72388973,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=V1057%20Cyg","source":"sesame","spectral_type":"F7/G3I/IIe","type":"Or*","type_text":"Orion-type variable \u2014 a young, erupting star","vmag":12.33},"score":27,"score_astronomy":100,"score_weather":27,"transit":{"airmass":1.0,"alt":87.3,"az":350.8,"t":"2025-09-12T19:55Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2025-09-12T17:05Z","end_local":"20:05","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2025-09-12T16:35Z","start_local":"19:35"},{"end":"2025-09-12T17:40Z","end_local":"20:40","hours":0.58,"label":"poor","mean_quality":0.11,"start":"2025-09-12T17:05Z","start_local":"20:05"},{"end":"2025-09-12T18:15Z","end_local":"21:15","hours":0.58,"label":"marginal","mean_quality":0.42,"start":"2025-09-12T17:40Z","start_local":"20:40"},{"end":"2025-09-12T19:00Z","end_local":"22:00","hours":0.75,"label":"good","mean_quality":0.96,"start":"2025-09-12T18:15Z","start_local":"21:15"},{"end":"2025-09-13T01:00Z","end_local":"04:00","hours":6.0,"label":"unusable","mean_quality":0.0,"start":"2025-09-12T19:00Z","start_local":"22:00"},{"end":"2025-09-13T02:25Z","end_local":"05:25","hours":1.42,"label":"marginal","mean_quality":0.49,"start":"2025-09-13T01:00Z","start_local":"04:00"},{"end":"2025-09-13T02:45Z","end_local":"05:45","hours":0.33,"label":"poor","mean_quality":0.16,"start":"2025-09-13T02:25Z","start_local":"05:25"},{"end":"2025-09-13T04:00Z","end_local":"07:00","hours":1.25,"label":"unusable","mean_quality":0.0,"start":"2025-09-13T02:45Z","start_local":"05:45"}]},{"best_window":{"end":"2025-09-13T02:25Z","end_local":"05:25","hours":1.42,"label":"marginal","mean_quality":0.45,"start":"2025-09-13T01:00Z","start_local":"04:00"},"dec":30.66017511,"moon_separation":30.1,"name":"M33","quality_hours":1.05,"ra":23.46206906,"resolved":{"common_name":"Triangulum Pinwheel","dec":30.66017511,"morphology":"SA(s)cd","name":"M 33","ra":23.46206906,"simbad_url":"https://simbad.cds.unistra.fr/simbad/sim-id?Ident=M33","source":"sesame","type":"GiG","type_text":"galaxy in a group","vmag":5.72},"score":15,"score_astronomy":62,"score_weather":24,"transit":{"airmass":1.02,"alt":79.1,"az":177.4,"t":"2025-09-13T00:25Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2025-09-12T18:30Z","end_local":"21:30","hours":1.92,"label":"unusable","mean_quality":0.0,"start":"2025-09-12T16:35Z","start_local":"19:35"},{"end":"2025-09-12T19:00Z","end_local":"22:00","hours":0.5,"label":"marginal","mean_quality":0.47,"start":"2025-09-12T18:30Z","start_local":"21:30"},{"end":"2025-09-13T01:00Z","end_local":"04:00","hours":6.0,"label":"unusable","mean_quality":0.0,"start":"2025-09-12T19:00Z","start_local":"22:00"},{"end":"2025-09-13T02:25Z","end_local":"05:25","hours":1.42,"label":"marginal","mean_quality":0.45,"start":"2025-09-13T01:00Z","start_local":"04:00"},{"end":"2025-09-13T03:35Z","end_local":"06:35","hours":1.17,"label":"poor","mean_quality":0.15,"start":"2025-09-13T02:25Z","start_local":"05:25"},{"end":"2025-09-13T04:00Z","end_local":"07:00","hours":0.42,"label":"unusable","mean_quality":0.0,"start":"2025-09-13T03:35Z","start_local":"06:35"}]}],"unscheduled":[{"name":"M42","why":"its best window (04:15\u201305:25) is outranked by M31, M33, M45"}],"warnings":[]}