{"calculation_version":"2026-10-10.1","days":30,"nights":[{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":10.76,"date":"2026-02-01","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":116.7,"score":0,"score_astronomy":7,"score_weather":0,"transit_alt":87.3,"transit_local":"12:35","verdict":"unusable","weather_source":"history","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":10.72,"date":"2026-02-02","moon_free_dark_hours":0.0,"moon_illumination":99,"moon_separation":120.7,"score":0,"score_astronomy":7,"score_weather":0,"transit_alt":87.3,"transit_local":"12:30","verdict":"unusable","weather_source":"history","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":10.69,"date":"2026-02-03","moon_free_dark_hours":0.42,"moon_illumination":95,"moon_separation":122.7,"score":1,"score_astronomy":7,"score_weather":19,"transit_alt":87.3,"transit_local":"12:25","verdict":"poor","weather_source":"history","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":10.66,"date":"2026-02-04","moon_free_dark_hours":1.53,"moon_illumination":89,"moon_separation":122.7,"score":0,"score_astronomy":7,"score_weather":0,"transit_alt":87.3,"transit_local":"12:20","verdict":"unusable","weather_source":"history","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":10.62,"date":"2026-02-05","moon_free_dark_hours":2.63,"moon_illumination":82,"moon_separation":120.9,"score":0,"score_astronomy":8,"score_weather":0,"transit_alt":87.3,"transit_local":"12:20","verdict":"unusable","weather_source":"history","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":10.59,"date":"2026-02-06","moon_free_dark_hours":3.7,"moon_illumination":74,"moon_separation":117.5,"score":0,"score_astronomy":8,"score_weather":0,"transit_alt":87.3,"transit_local":"12:15","verdict":"unusable","weather_source":"history","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":10.55,"date":"2026-02-07","moon_free_dark_hours":4.77,"moon_illumination":65,"moon_separation":112.9,"score":1,"score_astronomy":9,"score_weather":14,"transit_alt":87.3,"transit_local":"12:10","verdict":"poor","weather_source":"history","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":10.51,"date":"2026-02-08","moon_free_dark_hours":5.82,"moon_illumination":56,"moon_separation":107.6,"score":1,"score_astronomy":9,"score_weather":11,"transit_alt":87.3,"transit_local":"12:05","verdict":"poor","weather_source":"history","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":10.48,"date":"2026-02-09","moon_free_dark_hours":6.88,"moon_illumination":46,"moon_separation":101.7,"score":0,"score_astronomy":9,"score_weather":0,"transit_alt":87.3,"transit_local":"12:00","verdict":"unusable","weather_source":"history","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":10.44,"date":"2026-02-10","moon_free_dark_hours":7.9,"moon_illumination":37,"moon_separation":95.4,"score":0,"score_astronomy":10,"score_weather":0,"transit_alt":87.3,"transit_local":"11:55","verdict":"unusable","weather_source":"history","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":10.4,"date":"2026-02-11","moon_free_dark_hours":8.85,"moon_illumination":28,"moon_separation":89.0,"score":0,"score_astronomy":11,"score_weather":0,"transit_alt":87.3,"transit_local":"11:50","verdict":"unusable","weather_source":"history","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":10.36,"date":"2026-02-12","moon_free_dark_hours":9.68,"moon_illumination":20,"moon_separation":82.5,"score":0,"score_astronomy":13,"score_weather":0,"transit_alt":87.3,"transit_local":"11:45","verdict":"unusable","weather_source":"history","weekday":"Thu"},{"best_hours":0.42,"best_label":"marginal","best_window":"05:20\u201305:45","dark_hours":10.32,"date":"2026-02-13","moon_free_dark_hours":10.3,"moon_illumination":13,"moon_separation":76.2,"score":8,"score_astronomy":13,"score_weather":59,"transit_alt":87.3,"transit_local":"11:45","verdict":"poor","weather_source":"history","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":10.29,"date":"2026-02-14","moon_free_dark_hours":10.27,"moon_illumination":7,"moon_separation":70.3,"score":0,"score_astronomy":15,"score_weather":0,"transit_alt":87.3,"transit_local":"11:40","verdict":"unusable","weather_source":"history","weekday":"Sat"},{"best_hours":0.17,"best_label":"good","best_window":"05:35\u201305:45","dark_hours":10.25,"date":"2026-02-15","moon_free_dark_hours":10.23,"moon_illumination":3,"moon_separation":65.0,"score":14,"score_astronomy":16,"score_weather":88,"transit_alt":87.3,"transit_local":"11:35","verdict":"poor","weather_source":"history","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":10.21,"date":"2026-02-16","moon_free_dark_hours":10.18,"moon_illumination":0,"moon_separation":60.7,"score":0,"score_astronomy":17,"score_weather":0,"transit_alt":87.3,"transit_local":"11:30","verdict":"unusable","weather_source":"history","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":10.17,"date":"2026-02-17","moon_free_dark_hours":10.15,"moon_illumination":0,"moon_separation":57.9,"score":0,"score_astronomy":17,"score_weather":0,"transit_alt":87.3,"transit_local":"11:25","verdict":"unusable","weather_source":"history","weekday":"Tue"},{"best_hours":0.5,"best_label":"good","best_window":"05:10\u201305:40","dark_hours":10.12,"date":"2026-02-18","moon_free_dark_hours":10.12,"moon_illumination":2,"moon_separation":57.0,"score":18,"score_astronomy":18,"score_weather":100,"transit_alt":87.3,"transit_local":"11:25","verdict":"poor","weather_source":"history","weekday":"Wed"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":10.08,"date":"2026-02-19","moon_free_dark_hours":9.35,"moon_illumination":7,"moon_separation":58.1,"score":0,"score_astronomy":20,"score_weather":0,"transit_alt":87.3,"transit_local":"11:20","verdict":"unusable","weather_source":"history","weekday":"Thu"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":10.04,"date":"2026-02-20","moon_free_dark_hours":8.12,"moon_illumination":14,"moon_separation":61.3,"score":0,"score_astronomy":21,"score_weather":0,"transit_alt":87.3,"transit_local":"11:15","verdict":"unusable","weather_source":"history","weekday":"Fri"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":10.0,"date":"2026-02-21","moon_free_dark_hours":6.88,"moon_illumination":22,"moon_separation":66.1,"score":0,"score_astronomy":21,"score_weather":0,"transit_alt":87.3,"transit_local":"11:10","verdict":"unusable","weather_source":"history","weekday":"Sat"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":9.96,"date":"2026-02-22","moon_free_dark_hours":5.58,"moon_illumination":32,"moon_separation":72.3,"score":0,"score_astronomy":21,"score_weather":2,"transit_alt":87.3,"transit_local":"11:10","verdict":"unusable","weather_source":"history","weekday":"Sun"},{"best_hours":0.58,"best_label":"marginal","best_window":"05:00\u201305:35","dark_hours":9.91,"date":"2026-02-23","moon_free_dark_hours":4.28,"moon_illumination":43,"moon_separation":79.3,"score":6,"score_astronomy":23,"score_weather":25,"transit_alt":87.3,"transit_local":"11:05","verdict":"poor","weather_source":"history","weekday":"Mon"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":9.87,"date":"2026-02-24","moon_free_dark_hours":3.0,"moon_illumination":55,"moon_separation":86.9,"score":2,"score_astronomy":23,"score_weather":7,"transit_alt":87.3,"transit_local":"11:00","verdict":"poor","weather_source":"history","weekday":"Tue"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":9.83,"date":"2026-02-25","moon_free_dark_hours":1.87,"moon_illumination":66,"moon_separation":94.6,"score":0,"score_astronomy":24,"score_weather":0,"transit_alt":87.3,"transit_local":"10:55","verdict":"unusable","weather_source":"history","weekday":"Wed"},{"best_hours":1.0,"best_label":"marginal","best_window":"04:30\u201305:30","dark_hours":9.78,"date":"2026-02-26","moon_free_dark_hours":0.92,"moon_illumination":76,"moon_separation":102.0,"score":15,"score_astronomy":25,"score_weather":58,"transit_alt":87.3,"transit_local":"10:50","verdict":"poor","weather_source":"history","weekday":"Thu"},{"best_hours":0.67,"best_label":"good","best_window":"04:50\u201305:30","dark_hours":9.74,"date":"2026-02-27","moon_free_dark_hours":0.13,"moon_illumination":85,"moon_separation":109.0,"score":23,"score_astronomy":24,"score_weather":94,"transit_alt":87.3,"transit_local":"10:50","verdict":"poor","weather_source":"history","weekday":"Fri"},{"best_hours":0.75,"best_label":"good","best_window":"04:40\u201305:25","dark_hours":9.69,"date":"2026-02-28","moon_free_dark_hours":0.0,"moon_illumination":92,"moon_separation":114.9,"score":21,"score_astronomy":21,"score_weather":100,"transit_alt":87.3,"transit_local":"10:45","verdict":"poor","weather_source":"history","weekday":"Sat"},{"best_hours":0.25,"best_label":"good","best_window":"04:45\u201305:00","dark_hours":9.65,"date":"2026-03-01","moon_free_dark_hours":0.0,"moon_illumination":97,"moon_separation":119.4,"score":12,"score_astronomy":22,"score_weather":56,"transit_alt":87.3,"transit_local":"10:40","verdict":"poor","weather_source":"history","weekday":"Sun"},{"best_hours":0.0,"best_label":null,"best_window":null,"dark_hours":9.6,"date":"2026-03-02","moon_free_dark_hours":0.0,"moon_illumination":100,"moon_separation":122.2,"score":0,"score_astronomy":23,"score_weather":0,"transit_alt":87.3,"transit_local":"10:35","verdict":"unusable","weather_source":"history","weekday":"Mon"}],"note":"score_astronomy for every night; score_weather/score only where a forecast (next 4 days) or ERA5 history exists \u2014 null otherwise","start":"2026-02-01","target":{"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}}