HRIEXO ivo://nasa.heasarc/hriexo NASA/GSFC HEASARC HEASARC 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source The Einstein High Resolution Imager (HRI) consisted of a micro-channel plate. This database table has been generated at the EXOSAT observatory by automatically processing all the HRI images. Both the images and detected sources are available. This catalog has not been cleaned or checked. Users should beware of two possible problems: (1) spurious detections caused by extended sources have not been checked, and (2) there may be a one-pixel offset in some positions. For HRI images, one pixel is one arcsecond. (The images are rebinned from the original 0.5 arcseconds.) This is a service provided by NASA HEASARC . https://heasarc.gsfc.nasa.gov/W3Browse/all/hriexo.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=hriexo& GET text/xml 180 99999 true 71.2285815609249 -83.9978445590341 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=hriexo GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_hriexo&Action=More+Options&Action=Parameter+Search&ConeAdd=1 EINSTEIN 0.0166666666666667 X-ray public hriexo Einstein Catalog HRI ESTEC Sources name Source Designation meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable count_rate Count Rate ct/s phot.count float nullable count_rate_error Count Rate Error ct/s stat.error;phot.count float nullable sequence_number Sequence Number meta.id;obs short nullable exposure_time Effective Exposure Time (s) s time.duration;obs.exposure int 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 limage Maximum Length of Image Name in Characters meta.note;obs.image short nullable file_image Image Name meta.id;obs.image char nullable hour_end Hour of End Time time.end;obs short nullable vmag V Magnitude of Counterpart mag phot.mag;em.opt.V float nullable bii Galactic Latitude degree pos.galactic.lat double nullable lii Galactic Longitude degree pos.galactic.lon double nullable x_pixels X Pixels Integer Part pos.cartesian.x;instr.pixel short nullable qflag_hri Quality Flag HRI $$ if unusable meta.code.qual char nullable roll_angle Roll Angle instr.param;pos.posAng float nullable "_5ghz_radio_flux_density" Radio Flux Density (mJy) (5GHz) mJy phot.flux.density;em.radio.3-6GHz float nullable "time" Start Time of the Observation time.start;obs int nullable y_pixels Y Pixels Integer Part pos.cartesian.y;instr.pixel short nullable seconds_end Seconds of End Time time.end;obs short nullable extension_flag 1 if extended, 0 otherwise meta.code short nullable day_start Day of Start Time time.start;obs short nullable nh_21cm NH (21 cm) phys.columnDensity short nullable rates_files_id Rates File Id meta.dataset;meta.file char nullable seconds_start Seconds of Start Time time.start;obs short nullable background Background Counts per Square Pixel instr.background float nullable nimage Number of Images meta.number;obs.image short nullable class Browse Object Classification src.class short nullable position_error Position Error arcsec stat.error;pos short nullable bv_color B-V Color of Counterpart phot.color;em.opt.B;em.opt.V float nullable year_end Year of End Time time.end;obs short nullable minute_start Minute of Start Time time.start;obs short nullable "_100_micron_iras_flux" IRAS Flux in Band 4 Jy phot.flux;em.IR.60-100um float nullable off_axis_angle Off-Axis Angle arcmin instr.offset float nullable hour_start Hour of Start Time time.start;obs short nullable end_time Start Time of the Observation time.end;obs int nullable "_60_micron_iras_flux" IRAS Flux in Band 3 Jy phot.flux;em.IR.60-100um float nullable processed_date Date of Auto Run time.processing int nullable year_start Year of Start Time time.start;obs short nullable radio_flag Flag for Radio meta.code;em.radio short nullable "_25_micron_iras_flux" IRAS Flux in Band 2 Jy phot.flux;em.IR.15-30um float nullable "_12_micron_iras_flux" IRAS Flux in Band 1 Jy phot.flux;em.IR.8-15um float nullable redshift Redshift of Counterpart meta.id.assoc;src.redshift float nullable ub_color U-B Color of Counterpart phot.color;em.opt.U;em.opt.B float nullable flux_error Flux Error 0.1 -4.0keV stat.error;phot.flux;em.X-ray.soft float nullable minute_end Minute of End Time time.end;obs short nullable significance Source Significance stat.likelihood float nullable day_end Day of End Time time.end;obs short nullable obox Optimum Box Size (1 sec pixels) short nullable unknown_radio_flux_densi Radio Flux Density (mJy) (?GHz) mJy float nullable