IXMASTER ivo://nasa.heasarc/ixmaster NASA/GSFC HEASARC MSFC; HEASARC 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Observation Launched in late 2021, the Imaging X-ray Polarimetry Explorer (IXPE) is a NASA Small Explorer Mission in collaboration with the Italian Space Agency (ASI). The mission measures X-ray polarization from compact objects such as neutron stars and black holes, which serve as laboratories for exploring extreme gravitational and magnetic fields. With its imaging capabilities, IXPE will also map the magnetic-field structure of a few extended sources such as supernova remnants and pulsar wind nebulae. This table contains a list of (a) unobserved targets that are planned for observation by IXPE in the future and (b) IXPE observations which have been processed and successfully validated by the IXPE team. The data from these observations may or may not be public and the user should check the value of the public_date parameter to determine the status of a specified data set. Only those ObsIDs which have a public_date in the past will have data publicly available. Observations with a public_date parameter value which is either blank or a date in the future have been ingested into the HEASARC archive but will remain encrypted until their public date. This contents of this database table are generated by the IXPE Team and updated regularly with new observations. These updates are then delivered to the HEASARC and ingested into the HEASARC database in a timely fashion. Note that some parameters have been added and are populated by the HEASARC. This is a service provided by NASA HEASARC . https://heasarc.gsfc.nasa.gov/W3Browse/all/ixmaster.html Archive Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=ixmaster& GET text/xml 180 99999 true 19.2714 -73.4433 0.166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=ixmaster GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_ixmaster&Action=More+Options&Action=Parameter+Search&ConeAdd=1 IXPE 0.166666666666667 X-ray public ixmaster IXPE Master Catalog obsid Unique Observation/Sequence Number meta.id;obs char nullable name Designation of the Pointed Source meta.id;meta.main char nullable ra Right Ascension (Pointing Position) degree pos.eq.ra;meta.main double nullable dec Declination (Pointing Position) degree pos.eq.dec;meta.main double nullable "time" Start Time of the Observation (UTC) mjd time.start;obs double nullable exposure_1 DU1 Effective Exposure on Source s time.duration;obs.exposure double nullable exposure_2 DU2 Effective Exposure on Source s time.duration;obs.exposure double nullable exposure_3 DU3 Effective Exposure on Source s time.duration;obs.exposure double nullable processing_date Date of Processing mjd time.processing double nullable public_date Public Date mjd time.release double nullable obs_type Type of Observation (e.g., TOO) meta.code;obs char nullable issue_flag Boolean Flag Indicates Known Issue within Observation meta.code.qual short nullable status Observation Status (accepted, scheduled, observed, processed, archived) meta.code;obs char nullable title Proposal Title meta.title;obs.proposal char nullable pi_names Names of PI(s) Associated with the Observation meta.id.PI char nullable ontime_2 DU2 On-Source Time s time.duration;obs.exposure double nullable subject_category Proposal Category src.class char nullable category_code Proposal Category Code meta.code;src.class short nullable roll_angle_req Roll Angle Requested in Proposal (If Applicable) degree obs.param;pos.posAng double nullable caldb_version CALDB Version Used in the Pipeline meta.version;instr.calib char nullable coordinated Coordinated Observation Observatories meta.note;instr.obsty char nullable fcw_1 DU1 Filter Wheel Status meta.code;instr.filter char nullable cycle Proposal Cycle Number obs.proposal.cycle short nullable comments General Information About Observation meta.note char nullable abstract Proposal Abstract meta.abstract char nullable software_version Software Version Used in the Pipeline meta.version;meta.software char nullable ontime_3 DU3 On-Source Time s time.duration;obs.exposure double nullable end_time Stop Time of the Observation (UTC) mjd time.end;obs double nullable fcw_3 DU3 Filter Wheel Status meta.code;instr.filter char nullable bii Galactic Latitude (Pointing Position) degree pos.galactic.lat double nullable fcw_2 DU2 Filter Wheel Status meta.code;instr.filter char nullable lii Galactic Longitude (Pointing Position) degree pos.galactic.lon double nullable priority Proposal Priority meta.code char nullable prnb Proposal Number meta.number;obs.proposal int nullable ontime_1 DU1 On-Source Time s time.duration;obs.exposure double nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable