{"count":1177214,"next":"https://observe.lco.global/api/requestgroups/?format=json&limit=10&offset=6100&ordering=-submitter","previous":"https://observe.lco.global/api/requestgroups/?format=json&limit=10&offset=6080&ordering=-submitter","results":[{"id":2432724,"submitter":"youzheng","proposal":"DDT2025B-001","name":"Horsehead Nebula Mosaic SII","observation_type":"NORMAL","operator":"SINGLE","ipp_value":1.05,"state":"COMPLETED","created":"2026-01-27T23:08:38.985602Z","modified":"2026-01-27T23:43:36.198565Z","requests":[{"id":4096197,"observation_note":"","optimization_type":"TIME","state":"COMPLETED","suspend_until":null,"acceptability_threshold":100.0,"configuration_repeats":1,"extra_params":{"mosaic_pattern":"line"},"modified":"2026-01-27T23:43:36.154338Z","duration":1967,"configurations":[{"id":14322020,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":true,"sub_exposure_time":300},"priority":1,"instrument_configs":[{"optical_elements":{"filter":"SII"},"mode":"full_frame","exposure_time":600.0,"exposure_count":1,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.5,"min_lunar_distance":35.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-3.370042888888889,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}},{"id":14322021,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":true,"sub_exposure_time":300},"priority":2,"instrument_configs":[{"optical_elements":{"filter":"SII"},"mode":"full_frame","exposure_time":600.0,"exposure_count":1,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.5,"min_lunar_distance":35.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":true,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-2.4583333333333335,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}},{"id":14322022,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":true,"sub_exposure_time":300},"priority":3,"instrument_configs":[{"optical_elements":{"filter":"SII"},"mode":"full_frame","exposure_time":600.0,"exposure_count":1,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.5,"min_lunar_distance":35.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":true,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-1.546623777777778,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}}],"location":{"telescope_class":"0m4"},"windows":[{"start":"2026-01-27T23:02:34Z","end":"2026-01-28T04:00:00Z"}]}]},{"id":2432827,"submitter":"youzheng","proposal":"DDT2025B-001","name":"Horsehead Nebula Mosaic Ha","observation_type":"NORMAL","operator":"SINGLE","ipp_value":1.05,"state":"COMPLETED","created":"2026-01-28T03:18:25.393028Z","modified":"2026-01-28T06:38:58.020943Z","requests":[{"id":4096300,"observation_note":"","optimization_type":"TIME","state":"COMPLETED","suspend_until":null,"acceptability_threshold":100.0,"configuration_repeats":1,"extra_params":{"mosaic_pattern":"line"},"modified":"2026-01-28T06:38:58.004365Z","duration":4757,"configurations":[{"id":14322797,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":false},"priority":1,"instrument_configs":[{"optical_elements":{"filter":"H-Alpha"},"mode":"full_frame","exposure_time":300.0,"exposure_count":5,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.5,"min_lunar_distance":35.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-3.2397986666666667,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}},{"id":14322798,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":false},"priority":2,"instrument_configs":[{"optical_elements":{"filter":"H-Alpha"},"mode":"full_frame","exposure_time":300.0,"exposure_count":5,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.5,"min_lunar_distance":35.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-2.4583333333333335,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}},{"id":14322799,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":false},"priority":3,"instrument_configs":[{"optical_elements":{"filter":"H-Alpha"},"mode":"full_frame","exposure_time":300.0,"exposure_count":5,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.5,"min_lunar_distance":35.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-1.6768680000000002,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}}],"location":{"telescope_class":"0m4"},"windows":[{"start":"2026-01-28T00:45:25Z","end":"2026-01-28T07:30:00Z"}]}]},{"id":2432956,"submitter":"youzheng","proposal":"DDT2025B-001","name":"Horsehead Nebula Mosaic OIII","observation_type":"NORMAL","operator":"SINGLE","ipp_value":1.05,"state":"CANCELED","created":"2026-01-28T10:48:29.610326Z","modified":"2026-01-28T10:56:35.700444Z","requests":[{"id":4096452,"observation_note":"","optimization_type":"TIME","state":"CANCELED","suspend_until":null,"acceptability_threshold":100.0,"configuration_repeats":1,"extra_params":{"mosaic_pattern":"line"},"modified":"2026-01-28T10:56:35.695816Z","duration":9407,"configurations":[{"id":14324169,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":true,"sub_exposure_time":300},"priority":1,"instrument_configs":[{"optical_elements":{"filter":"OIII"},"mode":"full_frame","exposure_time":600.0,"exposure_count":5,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.5,"min_lunar_distance":30.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-3.2397986666666667,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}},{"id":14324170,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":true,"sub_exposure_time":300},"priority":2,"instrument_configs":[{"optical_elements":{"filter":"OIII"},"mode":"full_frame","exposure_time":600.0,"exposure_count":5,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.5,"min_lunar_distance":30.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-2.4583333333333335,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}},{"id":14324171,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":true,"sub_exposure_time":300},"priority":3,"instrument_configs":[{"optical_elements":{"filter":"OIII"},"mode":"full_frame","exposure_time":600.0,"exposure_count":5,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.5,"min_lunar_distance":30.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-1.6768680000000002,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}}],"location":{"telescope_class":"0m4"},"windows":[{"start":"2026-01-28T10:44:48Z","end":"2026-01-28T14:00:00Z"}]}]},{"id":2432961,"submitter":"youzheng","proposal":"DDT2025B-001","name":"Horsehead Nebula Mosaic OIII","observation_type":"NORMAL","operator":"SINGLE","ipp_value":1.05,"state":"WINDOW_EXPIRED","created":"2026-01-28T10:58:54.408775Z","modified":"2026-01-28T23:00:11.108977Z","requests":[{"id":4096457,"observation_note":"","optimization_type":"TIME","state":"WINDOW_EXPIRED","suspend_until":null,"acceptability_threshold":100.0,"configuration_repeats":1,"extra_params":{"mosaic_pattern":"line"},"modified":"2026-01-28T23:00:07.337666Z","duration":4757,"configurations":[{"id":14324267,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":false},"priority":1,"instrument_configs":[{"optical_elements":{"filter":"OIII"},"mode":"full_frame","exposure_time":300.0,"exposure_count":5,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.6,"min_lunar_distance":30.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-3.2397986666666667,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}},{"id":14324268,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":false},"priority":2,"instrument_configs":[{"optical_elements":{"filter":"OIII"},"mode":"full_frame","exposure_time":300.0,"exposure_count":5,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.6,"min_lunar_distance":30.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-2.4583333333333335,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}},{"id":14324269,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":false},"priority":3,"instrument_configs":[{"optical_elements":{"filter":"OIII"},"mode":"full_frame","exposure_time":300.0,"exposure_count":5,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.6,"min_lunar_distance":30.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-1.6768680000000002,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}}],"location":{"telescope_class":"0m4"},"windows":[{"start":"2026-01-28T10:56:37Z","end":"2026-01-28T23:00:00Z"}]}]},{"id":2433548,"submitter":"youzheng","proposal":"DDT2025B-001","name":"Markarian's Chain Synthesis 1A","observation_type":"NORMAL","operator":"SINGLE","ipp_value":1.05,"state":"COMPLETED","created":"2026-01-29T01:18:44.499136Z","modified":"2026-01-29T09:48:07.307526Z","requests":[{"id":4097112,"observation_note":"","optimization_type":"TIME","state":"COMPLETED","suspend_until":null,"acceptability_threshold":100.0,"configuration_repeats":1,"extra_params":{},"modified":"2026-01-29T09:48:07.297260Z","duration":1197,"configurations":[{"id":14328072,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":false},"priority":1,"instrument_configs":[{"optical_elements":{"filter":"ip"},"mode":"full_frame","exposure_time":100.0,"exposure_count":10,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.2,"min_lunar_distance":30.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"NGC 4438","ra":186.94029395563996,"dec":13.00880780455,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}}],"location":{"telescope_class":"0m4"},"windows":[{"start":"2026-01-29T09:30:00Z","end":"2026-01-29T10:00:00Z"}]}]},{"id":2433549,"submitter":"youzheng","proposal":"DDT2025B-001","name":"Horsehead Nebula Mosaic OIII","observation_type":"NORMAL","operator":"SINGLE","ipp_value":1.05,"state":"COMPLETED","created":"2026-01-29T01:21:19.844151Z","modified":"2026-01-29T02:45:06.956877Z","requests":[{"id":4097113,"observation_note":"","optimization_type":"TIME","state":"COMPLETED","suspend_until":null,"acceptability_threshold":100.0,"configuration_repeats":1,"extra_params":{"mosaic_pattern":"line"},"modified":"2026-01-29T02:45:06.919932Z","duration":4757,"configurations":[{"id":14328073,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":false},"priority":1,"instrument_configs":[{"optical_elements":{"filter":"OIII"},"mode":"full_frame","exposure_time":300.0,"exposure_count":5,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.6,"min_lunar_distance":30.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-3.2397986666666667,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}},{"id":14328074,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":false},"priority":2,"instrument_configs":[{"optical_elements":{"filter":"OIII"},"mode":"full_frame","exposure_time":300.0,"exposure_count":5,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.6,"min_lunar_distance":30.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-2.4583333333333335,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}},{"id":14328075,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":false},"priority":3,"instrument_configs":[{"optical_elements":{"filter":"OIII"},"mode":"full_frame","exposure_time":300.0,"exposure_count":5,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.6,"min_lunar_distance":30.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-1.6768680000000002,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}}],"location":{"telescope_class":"0m4"},"windows":[{"start":"2026-01-29T01:19:06Z","end":"2026-01-29T04:00:00Z"}]}]},{"id":2433550,"submitter":"youzheng","proposal":"DDT2025B-001","name":"Markarian's Chain Synthesis 1B","observation_type":"NORMAL","operator":"SINGLE","ipp_value":1.05,"state":"COMPLETED","created":"2026-01-29T01:21:41.224521Z","modified":"2026-01-29T09:48:09.701970Z","requests":[{"id":4097114,"observation_note":"","optimization_type":"TIME","state":"COMPLETED","suspend_until":null,"acceptability_threshold":100.0,"configuration_repeats":1,"extra_params":{},"modified":"2026-01-29T09:48:09.691852Z","duration":1197,"configurations":[{"id":14328076,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":false},"priority":1,"instrument_configs":[{"optical_elements":{"filter":"ip"},"mode":"full_frame","exposure_time":100.0,"exposure_count":10,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.2,"min_lunar_distance":30.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"NGC 4438","ra":186.94029395563996,"dec":13.00880780455,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}}],"location":{"telescope_class":"0m4"},"windows":[{"start":"2026-01-29T09:30:00Z","end":"2026-01-29T10:00:00Z"}]}]},{"id":2433551,"submitter":"youzheng","proposal":"DDT2025B-001","name":"Markarian's Chain Synthesis 1C","observation_type":"NORMAL","operator":"SINGLE","ipp_value":1.05,"state":"COMPLETED","created":"2026-01-29T01:21:59.333753Z","modified":"2026-01-29T09:48:22.952647Z","requests":[{"id":4097115,"observation_note":"","optimization_type":"TIME","state":"COMPLETED","suspend_until":null,"acceptability_threshold":100.0,"configuration_repeats":1,"extra_params":{},"modified":"2026-01-29T09:48:22.930742Z","duration":1197,"configurations":[{"id":14328077,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":false},"priority":1,"instrument_configs":[{"optical_elements":{"filter":"ip"},"mode":"full_frame","exposure_time":100.0,"exposure_count":10,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.2,"min_lunar_distance":30.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"NGC 4438","ra":186.94029395563996,"dec":13.00880780455,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}}],"location":{"telescope_class":"0m4"},"windows":[{"start":"2026-01-29T09:30:00Z","end":"2026-01-29T10:00:00Z"}]}]},{"id":2433611,"submitter":"youzheng","proposal":"DDT2025B-001","name":"Horsehead Nebula Mosaic SII","observation_type":"NORMAL","operator":"SINGLE","ipp_value":1.05,"state":"COMPLETED","created":"2026-01-29T04:03:53.286805Z","modified":"2026-01-29T06:40:51.856644Z","requests":[{"id":4097175,"observation_note":"","optimization_type":"TIME","state":"COMPLETED","suspend_until":null,"acceptability_threshold":100.0,"configuration_repeats":1,"extra_params":{"mosaic_pattern":"line"},"modified":"2026-01-29T06:40:51.805912Z","duration":4757,"configurations":[{"id":14328573,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":false},"priority":1,"instrument_configs":[{"optical_elements":{"filter":"SII"},"mode":"full_frame","exposure_time":300.0,"exposure_count":5,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.6,"min_lunar_distance":30.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-3.2397986666666667,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}},{"id":14328574,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":false},"priority":2,"instrument_configs":[{"optical_elements":{"filter":"SII"},"mode":"full_frame","exposure_time":300.0,"exposure_count":5,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.6,"min_lunar_distance":30.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-2.4583333333333335,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}},{"id":14328575,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":false},"priority":3,"instrument_configs":[{"optical_elements":{"filter":"SII"},"mode":"full_frame","exposure_time":300.0,"exposure_count":5,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.6,"min_lunar_distance":30.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-1.6768680000000002,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}}],"location":{"telescope_class":"0m4"},"windows":[{"start":"2026-01-29T04:02:28Z","end":"2026-01-29T07:00:00Z"}]}]},{"id":2433637,"submitter":"youzheng","proposal":"DDT2025B-001","name":"Horsehead Nebula Mosaic SII","observation_type":"NORMAL","operator":"SINGLE","ipp_value":1.05,"state":"COMPLETED","created":"2026-01-29T06:06:29.297701Z","modified":"2026-01-29T10:27:00.969842Z","requests":[{"id":4097201,"observation_note":"","optimization_type":"TIME","state":"COMPLETED","suspend_until":null,"acceptability_threshold":100.0,"configuration_repeats":1,"extra_params":{"mosaic_pattern":"line"},"modified":"2026-01-29T10:27:00.901349Z","duration":4757,"configurations":[{"id":14329030,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":false},"priority":1,"instrument_configs":[{"optical_elements":{"filter":"SII"},"mode":"full_frame","exposure_time":300.0,"exposure_count":5,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.6,"min_lunar_distance":30.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-3.2397986666666667,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}},{"id":14329031,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":false},"priority":2,"instrument_configs":[{"optical_elements":{"filter":"SII"},"mode":"full_frame","exposure_time":300.0,"exposure_count":5,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.6,"min_lunar_distance":30.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-2.4583333333333335,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}},{"id":14329032,"instrument_type":"0M4-SCICAM-QHY600","type":"EXPOSE","repeat_duration":null,"extra_params":{"sub_expose":false},"priority":3,"instrument_configs":[{"optical_elements":{"filter":"SII"},"mode":"full_frame","exposure_time":300.0,"exposure_count":5,"rotator_mode":"","extra_params":{"bin_x":1,"bin_y":1,"offset_ra":0,"offset_dec":0},"rois":[]}],"constraints":{"max_airmass":1.6,"min_lunar_distance":30.0,"max_lunar_phase":1.0,"extra_params":{}},"acquisition_config":{"mode":"OFF","extra_params":{}},"guiding_config":{"optional":false,"mode":"ON","optical_elements":{},"exposure_time":null,"extra_params":{}},"target":{"type":"ICRS","name":"Horsehead Nebula","ra":85.24583333333334,"dec":-1.6768680000000002,"proper_motion_ra":0.0,"proper_motion_dec":0.0,"parallax":0.0,"epoch":2000.0,"hour_angle":null,"extra_params":{}}}],"location":{"telescope_class":"0m4"},"windows":[{"start":"2026-01-29T06:04:04Z","end":"2026-01-29T10:30:00Z"}]}]}]}