{"calculation_version":"2026-10-10.1","forecast_source":"history","night_date":"2026-05-21","schedule":[{"end":"2026-05-22T03:00Z","end_local":"06:00","hours":9.42,"mean_quality":0.0,"start":"2026-05-21T17:35Z","start_local":"20:35","target":null}],"targets":[{"best_window":null,"dec":41.26875,"moon_separation":100.2,"name":"M31","quality_hours":0.05,"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":1,"score_astronomy":9,"score_weather":9,"transit":{"airmass":1.0,"alt":89.7,"az":160.8,"t":"2026-05-22T07:05Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2026-05-22T01:00Z","end_local":"04:00","hours":7.42,"label":"unusable","mean_quality":0.0,"start":"2026-05-21T17:35Z","start_local":"20:35"},{"end":"2026-05-22T02:00Z","end_local":"05:00","hours":1.0,"label":"poor","mean_quality":0.05,"start":"2026-05-22T01:00Z","start_local":"04:00"},{"end":"2026-05-22T03:00Z","end_local":"06:00","hours":1.0,"label":"unusable","mean_quality":0.0,"start":"2026-05-22T02:00Z","start_local":"05:00"}]},{"best_window":null,"dec":-5.3876,"moon_separation":55.6,"name":"M42","quality_hours":0.0,"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":0,"score_astronomy":0,"score_weather":0,"transit":{"airmass":1.47,"alt":42.9,"az":179.6,"t":"2026-05-21T12:00Z"},"verdict":"unusable","weather_known":true,"windows":[{"end":"2026-05-22T03:00Z","end_local":"06:00","hours":9.42,"label":"unusable","mean_quality":0.0,"start":"2026-05-21T17:35Z","start_local":"20:35"}]},{"best_window":null,"dec":24.11388889,"moon_separation":71.6,"name":"M45","quality_hours":0.0,"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":0,"score_astronomy":0,"score_weather":0,"transit":{"airmass":1.05,"alt":72.5,"az":181.7,"t":"2026-05-21T10:15Z"},"verdict":"unusable","weather_known":true,"windows":[{"end":"2026-05-22T03:00Z","end_local":"06:00","hours":9.42,"label":"unusable","mean_quality":0.0,"start":"2026-05-21T17:35Z","start_local":"20:35"}]},{"best_window":null,"dec":44.33,"moon_separation":116.4,"name":"NGC 7000","quality_hours":0.18,"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":4,"score_astronomy":100,"score_weather":4,"transit":{"airmass":1.0,"alt":87.2,"az":6.2,"t":"2026-05-22T03:20Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2026-05-21T20:30Z","end_local":"23:30","hours":2.92,"label":"unusable","mean_quality":0.0,"start":"2026-05-21T17:35Z","start_local":"20:35"},{"end":"2026-05-21T21:00Z","end_local":"00:00","hours":0.5,"label":"poor","mean_quality":0.22,"start":"2026-05-21T20:30Z","start_local":"23:30"},{"end":"2026-05-22T01:00Z","end_local":"04:00","hours":4.0,"label":"unusable","mean_quality":0.0,"start":"2026-05-21T21:00Z","start_local":"00:00"},{"end":"2026-05-22T02:00Z","end_local":"05:00","hours":1.0,"label":"poor","mean_quality":0.07,"start":"2026-05-22T01:00Z","start_local":"04:00"},{"end":"2026-05-22T03:00Z","end_local":"06:00","hours":1.0,"label":"unusable","mean_quality":0.0,"start":"2026-05-22T02:00Z","start_local":"05:00"}]},{"best_window":null,"dec":44.25788576,"moon_separation":116.5,"name":"V1057 Cyg","quality_hours":0.18,"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":4,"score_astronomy":100,"score_weather":4,"transit":{"airmass":1.0,"alt":87.3,"az":6.8,"t":"2026-05-22T03:20Z"},"verdict":"poor","weather_known":true,"windows":[{"end":"2026-05-21T20:30Z","end_local":"23:30","hours":2.92,"label":"unusable","mean_quality":0.0,"start":"2026-05-21T17:35Z","start_local":"20:35"},{"end":"2026-05-21T21:00Z","end_local":"00:00","hours":0.5,"label":"poor","mean_quality":0.22,"start":"2026-05-21T20:30Z","start_local":"23:30"},{"end":"2026-05-22T01:00Z","end_local":"04:00","hours":4.0,"label":"unusable","mean_quality":0.0,"start":"2026-05-21T21:00Z","start_local":"00:00"},{"end":"2026-05-22T02:00Z","end_local":"05:00","hours":1.0,"label":"poor","mean_quality":0.07,"start":"2026-05-22T01:00Z","start_local":"04:00"},{"end":"2026-05-22T03:00Z","end_local":"06:00","hours":1.0,"label":"unusable","mean_quality":0.0,"start":"2026-05-22T02:00Z","start_local":"05:00"}]},{"best_window":null,"dec":30.66017511,"moon_separation":97.1,"name":"M33","quality_hours":0.0,"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":0,"score_astronomy":0,"score_weather":0,"transit":{"airmass":1.02,"alt":79.1,"az":178.3,"t":"2026-05-22T07:55Z"},"verdict":"unusable","weather_known":true,"windows":[{"end":"2026-05-22T03:00Z","end_local":"06:00","hours":9.42,"label":"unusable","mean_quality":0.0,"start":"2026-05-21T17:35Z","start_local":"20:35"}]}],"unscheduled":[{"name":"M31","why":"no usable window tonight"},{"name":"M42","why":"The target stays below 20\u00b0 for the whole night."},{"name":"M45","why":"The target stays below 20\u00b0 for the whole night."},{"name":"NGC 7000","why":"no usable window tonight"},{"name":"V1057 Cyg","why":"no usable window tonight"},{"name":"M33","why":"no usable window tonight"}],"warnings":[]}