{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2025-10-04","schedule":[{"end":"2025-10-04T17:30Z","end_local":"20:30","hours":1.58,"mean_quality":0.0,"start":"2025-10-04T15:55Z","start_local":"18:55","target":null},{"end":"2025-10-04T19:10Z","end_local":"22:10","hours":1.67,"mean_quality":0.53,"start":"2025-10-04T17:30Z","start_local":"20:30","target":"NGC 7000"},{"end":"2025-10-04T20:50Z","end_local":"23:50","hours":1.67,"mean_quality":0.46,"start":"2025-10-04T19:10Z","start_local":"22:10","target":"V1057 Cyg"},{"end":"2025-10-04T22:30Z","end_local":"01:30","hours":1.67,"mean_quality":0.58,"start":"2025-10-04T20:50Z","start_local":"23:50","target":"M45"},{"end":"2025-10-05T00:10Z","end_local":"03:10","hours":1.67,"mean_quality":0.59,"start":"2025-10-04T22:30Z","start_local":"01:30","target":"M31"},{"end":"2025-10-05T01:50Z","end_local":"04:50","hours":1.67,"mean_quality":0.65,"start":"2025-10-05T00:10Z","start_local":"03:10","target":"M33"},{"end":"2025-10-05T03:25Z","end_local":"06:25","hours":1.58,"mean_quality":0.7,"start":"2025-10-05T01:50Z","start_local":"04:50","target":"M42"},{"end":"2025-10-05T04:25Z","end_local":"07:25","hours":1.0,"mean_quality":0.0,"start":"2025-10-05T03:25Z","start_local":"06:25","target":null}],"targets":[{"best_window":{"end":"2025-10-05T02:50Z","end_local":"05:50","hours":3.17,"label":"good","mean_quality":0.71,"start":"2025-10-04T23:40Z","start_local":"02:40"},"dec":41.26875,"moon_separation":55.1,"name":"M31","quality_hours":5.75,"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":88,"score_astronomy":92,"score_weather":96,"transit":{"airmass":1.0,"alt":89.7,"az":187.4,"t":"2025-10-04T22:10Z"},"verdict":"good","weather_known":true,"windows":[{"end":"2025-10-04T16:30Z","end_local":"19:30","hours":0.58,"label":"unusable","mean_quality":0.0,"start":"2025-10-04T15:55Z","start_local":"18:55"},{"end":"2025-10-04T17:30Z","end_local":"20:30","hours":1.0,"label":"poor","mean_quality":0.12,"start":"2025-10-04T16:30Z","start_local":"19:30"},{"end":"2025-10-04T23:40Z","end_local":"02:40","hours":6.17,"label":"marginal","mean_quality":0.5,"start":"2025-10-04T17:30Z","start_local":"20:30"},{"end":"2025-10-05T02:50Z","end_local":"05:50","hours":3.17,"label":"good","mean_quality":0.71,"start":"2025-10-04T23:40Z","start_local":"02:40"},{"end":"2025-10-05T03:25Z","end_local":"06:25","hours":0.58,"label":"marginal","mean_quality":0.42,"start":"2025-10-05T02:50Z","start_local":"05:50"},{"end":"2025-10-05T03:55Z","end_local":"06:55","hours":0.5,"label":"poor","mean_quality":0.12,"start":"2025-10-05T03:25Z","start_local":"06:25"},{"end":"2025-10-05T04:25Z","end_local":"07:25","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2025-10-05T03:55Z","start_local":"06:55"}]},{"best_window":{"end":"2025-10-05T02:50Z","end_local":"05:50","hours":2.67,"label":"good","mean_quality":0.75,"start":"2025-10-05T00:10Z","start_local":"03:10"},"dec":-5.3876,"moon_separation":99.7,"name":"M42","quality_hours":2.75,"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":61,"score_astronomy":61,"score_weather":100,"transit":{"airmass":1.47,"alt":42.9,"az":179.5,"t":"2025-10-05T03:00Z"},"verdict":"marginal","weather_known":true,"windows":[{"end":"2025-10-04T23:15Z","end_local":"02:15","hours":7.33,"label":"unusable","mean_quality":0.0,"start":"2025-10-04T15:55Z","start_local":"18:55"},{"end":"2025-10-05T00:10Z","end_local":"03:10","hours":0.92,"label":"marginal","mean_quality":0.46,"start":"2025-10-04T23:15Z","start_local":"02:15"},{"end":"2025-10-05T02:50Z","end_local":"05:50","hours":2.67,"label":"good","mean_quality":0.75,"start":"2025-10-05T00:10Z","start_local":"03:10"},{"end":"2025-10-05T03:25Z","end_local":"06:25","hours":0.58,"label":"marginal","mean_quality":0.44,"start":"2025-10-05T02:50Z","start_local":"05:50"},{"end":"2025-10-05T03:55Z","end_local":"06:55","hours":0.5,"label":"poor","mean_quality":0.13,"start":"2025-10-05T03:25Z","start_local":"06:25"},{"end":"2025-10-05T04:25Z","end_local":"07:25","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2025-10-05T03:55Z","start_local":"06:55"}]},{"best_window":{"end":"2025-10-05T02:50Z","end_local":"05:50","hours":4.92,"label":"good","mean_quality":0.76,"start":"2025-10-04T21:55Z","start_local":"00:55"},"dec":24.11388889,"moon_separation":78.2,"name":"M45","quality_hours":5.11,"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":99,"score_astronomy":100,"score_weather":99,"transit":{"airmass":1.05,"alt":72.5,"az":181.5,"t":"2025-10-05T01:15Z"},"verdict":"good","weather_known":true,"windows":[{"end":"2025-10-04T19:40Z","end_local":"22:40","hours":3.75,"label":"unusable","mean_quality":0.0,"start":"2025-10-04T15:55Z","start_local":"18:55"},{"end":"2025-10-04T20:00Z","end_local":"23:00","hours":0.33,"label":"poor","mean_quality":0.25,"start":"2025-10-04T19:40Z","start_local":"22:40"},{"end":"2025-10-04T21:55Z","end_local":"00:55","hours":1.92,"label":"marginal","mean_quality":0.49,"start":"2025-10-04T20:00Z","start_local":"23:00"},{"end":"2025-10-05T02:50Z","end_local":"05:50","hours":4.92,"label":"good","mean_quality":0.76,"start":"2025-10-04T21:55Z","start_local":"00:55"},{"end":"2025-10-05T03:25Z","end_local":"06:25","hours":0.58,"label":"marginal","mean_quality":0.5,"start":"2025-10-05T02:50Z","start_local":"05:50"},{"end":"2025-10-05T03:55Z","end_local":"06:55","hours":0.5,"label":"poor","mean_quality":0.15,"start":"2025-10-05T03:25Z","start_local":"06:25"},{"end":"2025-10-05T04:25Z","end_local":"07:25","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2025-10-05T03:55Z","start_local":"06:55"}]},{"best_window":{"end":"2025-10-05T01:15Z","end_local":"04:15","hours":7.75,"label":"marginal","mean_quality":0.49,"start":"2025-10-04T17:30Z","start_local":"20:30"},"dec":44.33,"moon_separation":58.1,"name":"NGC 7000","quality_hours":4.0,"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":56,"score_astronomy":60,"score_weather":94,"transit":{"airmass":1.0,"alt":87.3,"az":3.6,"t":"2025-10-04T18:25Z"},"verdict":"marginal","weather_known":true,"windows":[{"end":"2025-10-04T16:30Z","end_local":"19:30","hours":0.58,"label":"unusable","mean_quality":0.0,"start":"2025-10-04T15:55Z","start_local":"18:55"},{"end":"2025-10-04T17:30Z","end_local":"20:30","hours":1.0,"label":"poor","mean_quality":0.15,"start":"2025-10-04T16:30Z","start_local":"19:30"},{"end":"2025-10-05T01:15Z","end_local":"04:15","hours":7.75,"label":"marginal","mean_quality":0.49,"start":"2025-10-04T17:30Z","start_local":"20:30"},{"end":"2025-10-05T01:20Z","end_local":"04:20","hours":0.08,"label":"poor","mean_quality":0.29,"start":"2025-10-05T01:15Z","start_local":"04:15"},{"end":"2025-10-05T04:25Z","end_local":"07:25","hours":3.08,"label":"unusable","mean_quality":0.0,"start":"2025-10-05T01:20Z","start_local":"04:20"}]},{"best_window":{"end":"2025-10-05T01:15Z","end_local":"04:15","hours":7.75,"label":"marginal","mean_quality":0.49,"start":"2025-10-04T17:30Z","start_local":"20:30"},"dec":44.25788576,"moon_separation":58.1,"name":"V1057 Cyg","quality_hours":4.0,"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":56,"score_astronomy":60,"score_weather":94,"transit":{"airmass":1.0,"alt":87.3,"az":4.2,"t":"2025-10-04T18:25Z"},"verdict":"marginal","weather_known":true,"windows":[{"end":"2025-10-04T16:30Z","end_local":"19:30","hours":0.58,"label":"unusable","mean_quality":0.0,"start":"2025-10-04T15:55Z","start_local":"18:55"},{"end":"2025-10-04T17:30Z","end_local":"20:30","hours":1.0,"label":"poor","mean_quality":0.15,"start":"2025-10-04T16:30Z","start_local":"19:30"},{"end":"2025-10-05T01:15Z","end_local":"04:15","hours":7.75,"label":"marginal","mean_quality":0.49,"start":"2025-10-04T17:30Z","start_local":"20:30"},{"end":"2025-10-05T01:20Z","end_local":"04:20","hours":0.08,"label":"poor","mean_quality":0.29,"start":"2025-10-05T01:15Z","start_local":"04:15"},{"end":"2025-10-05T04:25Z","end_local":"07:25","hours":3.08,"label":"unusable","mean_quality":0.0,"start":"2025-10-05T01:20Z","start_local":"04:20"}]},{"best_window":{"end":"2025-10-05T02:50Z","end_local":"05:50","hours":3.08,"label":"good","mean_quality":0.72,"start":"2025-10-04T23:45Z","start_local":"02:45"},"dec":30.66017511,"moon_separation":54.4,"name":"M33","quality_hours":5.57,"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":92,"score_astronomy":95,"score_weather":97,"transit":{"airmass":1.02,"alt":79.1,"az":179.1,"t":"2025-10-04T23:00Z"},"verdict":"good","weather_known":true,"windows":[{"end":"2025-10-04T17:05Z","end_local":"20:05","hours":1.17,"label":"unusable","mean_quality":0.0,"start":"2025-10-04T15:55Z","start_local":"18:55"},{"end":"2025-10-04T17:35Z","end_local":"20:35","hours":0.5,"label":"poor","mean_quality":0.15,"start":"2025-10-04T17:05Z","start_local":"20:05"},{"end":"2025-10-04T23:45Z","end_local":"02:45","hours":6.17,"label":"marginal","mean_quality":0.48,"start":"2025-10-04T17:35Z","start_local":"20:35"},{"end":"2025-10-05T02:50Z","end_local":"05:50","hours":3.08,"label":"good","mean_quality":0.72,"start":"2025-10-04T23:45Z","start_local":"02:45"},{"end":"2025-10-05T03:25Z","end_local":"06:25","hours":0.58,"label":"marginal","mean_quality":0.43,"start":"2025-10-05T02:50Z","start_local":"05:50"},{"end":"2025-10-05T03:55Z","end_local":"06:55","hours":0.5,"label":"poor","mean_quality":0.12,"start":"2025-10-05T03:25Z","start_local":"06:25"},{"end":"2025-10-05T04:25Z","end_local":"07:25","hours":0.5,"label":"unusable","mean_quality":0.0,"start":"2025-10-05T03:55Z","start_local":"06:55"}]}],"unscheduled":[],"warnings":[]}