{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2026-02-27","schedule":[{"end":"2026-02-27T17:45Z","end_local":"19:45","hours":1.67,"mean_quality":0.0,"start":"2026-02-27T16:05Z","start_local":"18:05","target":null},{"end":"2026-02-27T18:20Z","end_local":"20:20","hours":0.58,"mean_quality":0.52,"start":"2026-02-27T17:45Z","start_local":"19:45","target":"M31"},{"end":"2026-02-27T18:55Z","end_local":"20:55","hours":0.58,"mean_quality":0.45,"start":"2026-02-27T18:20Z","start_local":"20:20","target":"M33"},{"end":"2026-02-27T19:00Z","end_local":"21:00","hours":0.08,"mean_quality":0.41,"start":"2026-02-27T18:55Z","start_local":"20:55","target":"M45"},{"end":"2026-02-28T02:00Z","end_local":"04:00","hours":7.0,"mean_quality":0.0,"start":"2026-02-27T19:00Z","start_local":"21:00","target":null},{"end":"2026-02-28T02:35Z","end_local":"04:35","hours":0.58,"mean_quality":0.44,"start":"2026-02-28T02:00Z","start_local":"04:00","target":"NGC 7000"},{"end":"2026-02-28T04:00Z","end_local":"06:00","hours":1.42,"mean_quality":0.55,"start":"2026-02-28T02:35Z","start_local":"04:35","target":"V1057 Cyg"},{"end":"2026-02-28T05:00Z","end_local":"07:00","hours":1.0,"mean_quality":0.0,"start":"2026-02-28T04:00Z","start_local":"06:00","target":null}],"targets":[{"best_window":{"end":"2026-02-27T19:00Z","end_local":"21:00","hours":1.25,"label":"marginal","mean_quality":0.45,"start":"2026-02-27T17:45Z","start_local":"19:45"},"dec":41.26875,"moon_separation":85.0,"name":"M31","quality_hours":0.79,"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":11,"score_astronomy":12,"score_weather":90,"transit":{"airmass":1.0,"alt":89.7,"az":152.5,"t":"2026-02-27T12:35Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2026-02-27T16:40Z","end_local":"18:40","hours":0.58,"label":"unusable","mean_quality":0.0,"start":"2026-02-27T16:05Z","start_local":"18:05"},{"end":"2026-02-27T17:45Z","end_local":"19:45","hours":1.08,"label":"poor","mean_quality":0.19,"start":"2026-02-27T16:40Z","start_local":"18:40"},{"end":"2026-02-27T19:00Z","end_local":"21:00","hours":1.25,"label":"marginal","mean_quality":0.45,"start":"2026-02-27T17:45Z","start_local":"19:45"},{"end":"2026-02-27T19:15Z","end_local":"21:15","hours":0.25,"label":"poor","mean_quality":0.07,"start":"2026-02-27T19:00Z","start_local":"21:00"},{"end":"2026-02-28T05:00Z","end_local":"07:00","hours":9.75,"label":"unusable","mean_quality":0.0,"start":"2026-02-27T19:15Z","start_local":"21:15"}]},{"best_window":{"end":"2026-02-27T19:00Z","end_local":"21:00","hours":1.25,"label":"marginal","mean_quality":0.36,"start":"2026-02-27T17:45Z","start_local":"19:45"},"dec":-5.3876,"moon_separation":44.2,"name":"M42","quality_hours":0.71,"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":13,"score_weather":55,"transit":{"airmass":1.47,"alt":42.9,"az":179.2,"t":"2026-02-27T17:25Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2026-02-27T16:40Z","end_local":"18:40","hours":0.58,"label":"unusable","mean_quality":0.0,"start":"2026-02-27T16:05Z","start_local":"18:05"},{"end":"2026-02-27T17:45Z","end_local":"19:45","hours":1.08,"label":"poor","mean_quality":0.13,"start":"2026-02-27T16:40Z","start_local":"18:40"},{"end":"2026-02-27T19:00Z","end_local":"21:00","hours":1.25,"label":"marginal","mean_quality":0.36,"start":"2026-02-27T17:45Z","start_local":"19:45"},{"end":"2026-02-27T20:00Z","end_local":"22:00","hours":1.0,"label":"poor","mean_quality":0.08,"start":"2026-02-27T19:00Z","start_local":"21:00"},{"end":"2026-02-27T21:00Z","end_local":"23:00","hours":1.0,"label":"unusable","mean_quality":0.0,"start":"2026-02-27T20:00Z","start_local":"22:00"},{"end":"2026-02-27T21:15Z","end_local":"23:15","hours":0.25,"label":"poor","mean_quality":0.19,"start":"2026-02-27T21:00Z","start_local":"23:00"},{"end":"2026-02-28T05:00Z","end_local":"07:00","hours":7.75,"label":"unusable","mean_quality":0.0,"start":"2026-02-27T21:15Z","start_local":"23:15"}]},{"best_window":{"end":"2026-02-27T19:00Z","end_local":"21:00","hours":1.25,"label":"marginal","mean_quality":0.44,"start":"2026-02-27T17:45Z","start_local":"19:45"},"dec":24.11388889,"moon_separation":54.4,"name":"M45","quality_hours":0.88,"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":11,"score_astronomy":19,"score_weather":56,"transit":{"airmass":1.05,"alt":72.5,"az":180.7,"t":"2026-02-27T15:40Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2026-02-27T16:40Z","end_local":"18:40","hours":0.58,"label":"unusable","mean_quality":0.0,"start":"2026-02-27T16:05Z","start_local":"18:05"},{"end":"2026-02-27T17:45Z","end_local":"19:45","hours":1.08,"label":"poor","mean_quality":0.17,"start":"2026-02-27T16:40Z","start_local":"18:40"},{"end":"2026-02-27T19:00Z","end_local":"21:00","hours":1.25,"label":"marginal","mean_quality":0.44,"start":"2026-02-27T17:45Z","start_local":"19:45"},{"end":"2026-02-27T20:00Z","end_local":"22:00","hours":1.0,"label":"poor","mean_quality":0.09,"start":"2026-02-27T19:00Z","start_local":"21:00"},{"end":"2026-02-27T21:00Z","end_local":"23:00","hours":1.0,"label":"unusable","mean_quality":0.0,"start":"2026-02-27T20:00Z","start_local":"22:00"},{"end":"2026-02-27T21:15Z","end_local":"23:15","hours":0.25,"label":"poor","mean_quality":0.22,"start":"2026-02-27T21:00Z","start_local":"23:00"},{"end":"2026-02-28T05:00Z","end_local":"07:00","hours":7.75,"label":"unusable","mean_quality":0.0,"start":"2026-02-27T21:15Z","start_local":"23:15"}]},{"best_window":{"end":"2026-02-28T03:30Z","end_local":"05:30","hours":0.67,"label":"good","mean_quality":0.67,"start":"2026-02-28T02:50Z","start_local":"04:50"},"dec":44.33,"moon_separation":108.9,"name":"NGC 7000","quality_hours":1.1,"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":23,"score_astronomy":24,"score_weather":94,"transit":{"airmass":1.0,"alt":87.2,"az":352.6,"t":"2026-02-28T08:50Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2026-02-28T02:00Z","end_local":"04:00","hours":9.92,"label":"unusable","mean_quality":0.0,"start":"2026-02-27T16:05Z","start_local":"18:05"},{"end":"2026-02-28T02:50Z","end_local":"04:50","hours":0.83,"label":"marginal","mean_quality":0.48,"start":"2026-02-28T02:00Z","start_local":"04:00"},{"end":"2026-02-28T03:30Z","end_local":"05:30","hours":0.67,"label":"good","mean_quality":0.67,"start":"2026-02-28T02:50Z","start_local":"04:50"},{"end":"2026-02-28T04:00Z","end_local":"06:00","hours":0.5,"label":"marginal","mean_quality":0.38,"start":"2026-02-28T03:30Z","start_local":"05:30"},{"end":"2026-02-28T04:30Z","end_local":"06:30","hours":0.5,"label":"poor","mean_quality":0.13,"start":"2026-02-28T04:00Z","start_local":"06:00"},{"end":"2026-02-28T05:00Z","end_local":"07:00","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2026-02-28T04:30Z","start_local":"06:30"}]},{"best_window":{"end":"2026-02-28T03:30Z","end_local":"05:30","hours":0.67,"label":"good","mean_quality":0.67,"start":"2026-02-28T02:50Z","start_local":"04:50"},"dec":44.25788576,"moon_separation":109.0,"name":"V1057 Cyg","quality_hours":1.1,"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":23,"score_astronomy":24,"score_weather":94,"transit":{"airmass":1.0,"alt":87.3,"az":352.8,"t":"2026-02-28T08:50Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2026-02-28T02:00Z","end_local":"04:00","hours":9.92,"label":"unusable","mean_quality":0.0,"start":"2026-02-27T16:05Z","start_local":"18:05"},{"end":"2026-02-28T02:50Z","end_local":"04:50","hours":0.83,"label":"marginal","mean_quality":0.48,"start":"2026-02-28T02:00Z","start_local":"04:00"},{"end":"2026-02-28T03:30Z","end_local":"05:30","hours":0.67,"label":"good","mean_quality":0.67,"start":"2026-02-28T02:50Z","start_local":"04:50"},{"end":"2026-02-28T04:00Z","end_local":"06:00","hours":0.5,"label":"marginal","mean_quality":0.38,"start":"2026-02-28T03:30Z","start_local":"05:30"},{"end":"2026-02-28T04:30Z","end_local":"06:30","hours":0.5,"label":"poor","mean_quality":0.13,"start":"2026-02-28T04:00Z","start_local":"06:00"},{"end":"2026-02-28T05:00Z","end_local":"07:00","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2026-02-28T04:30Z","start_local":"06:30"}]},{"best_window":{"end":"2026-02-27T19:00Z","end_local":"21:00","hours":1.25,"label":"marginal","mean_quality":0.47,"start":"2026-02-27T17:45Z","start_local":"19:45"},"dec":30.66017511,"moon_separation":80.4,"name":"M33","quality_hours":0.83,"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":12,"score_astronomy":14,"score_weather":85,"transit":{"airmass":1.02,"alt":79.1,"az":178.0,"t":"2026-02-27T13:25Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2026-02-27T16:40Z","end_local":"18:40","hours":0.58,"label":"unusable","mean_quality":0.0,"start":"2026-02-27T16:05Z","start_local":"18:05"},{"end":"2026-02-27T17:45Z","end_local":"19:45","hours":1.08,"label":"poor","mean_quality":0.19,"start":"2026-02-27T16:40Z","start_local":"18:40"},{"end":"2026-02-27T19:00Z","end_local":"21:00","hours":1.25,"label":"marginal","mean_quality":0.47,"start":"2026-02-27T17:45Z","start_local":"19:45"},{"end":"2026-02-27T19:30Z","end_local":"21:30","hours":0.5,"label":"poor","mean_quality":0.07,"start":"2026-02-27T19:00Z","start_local":"21:00"},{"end":"2026-02-28T05:00Z","end_local":"07:00","hours":9.5,"label":"unusable","mean_quality":0.0,"start":"2026-02-27T19:30Z","start_local":"21:30"}]}],"unscheduled":[{"name":"M42","why":"its best window (19:45\u201321:00) is outranked by M31, M33, M45"}],"warnings":[]}