EXOFOT ivo://nasa.heasarc/exofot NASA/GSFC HEASARC HEASARC 2026-04-10 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Observation The EXOFOT database table contains the log of the EXOSAT final observation tapes (FOTs). It is meant to help locate the desired EXOSAT data file within the HEASARC data archive. The table itself contains a minimal number of parameters regarding the observation. This information corresponds to the first 255 bytes which label the FOT. Those parameters are target name, experiment, and start and stop time. The other parameters in the table are more related to the organization of the archive. This is a service provided by NASA HEASARC . https://heasarc.gsfc.nasa.gov/W3Browse/all/exofot.html Archive Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=exofot GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_exofot&Action=More+Options&Action=Parameter+Search&ConeAdd=1 EXOSAT 0.0166666666666667 X-ray public exofot EXOSAT Final Observation Tapes directory Path Directory meta.dataset char nullable faino Fai Record Sequence Number meta.id int nullable comp_factor Compression Factor arith.factor;meta.file double nullable errors Tape Errors During Transcription meta.code.error char nullable end_time End Time of Observation mjd time.end;obs double nullable name Target Designation meta.id;meta.main char nullable file_names File Names: EE5301 EE5302 meta.dataset;meta.file char nullable file_name Name of Archive File meta.dataset;meta.file char nullable file_size File Size phys.size;meta.file int nullable "time" Start Time of Observation mjd time.start;obs double nullable fotid ESOC serial number (1st FOT) meta.id char nullable nfiles Number of Files in FOT Archive meta.number;meta.file short nullable "__row" System index column char nullable esoc_trsc_time Date of ESOC Transcription mjd time.processing double nullable file_bytes Number of Bytes per File phys.size;meta.file char nullable instrument Experiment instr;instr.det char nullable