COS-B ivo://nasa.heasarc/cosbmaps NASA/GSFC HEASARC HEASARC 2026-06-12 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Image The European Space Agency's satellite COS-B was dedicated to gamma-ray astronomy in the energy range 50 MeV to 5 Gev and carried a single spark chamber telescope with approximately a 20 degree field of view. COS-B operated in a highly eccentric polar orbit with apogee around 90000 km between 17 August 1975 and 25 April 1982. During this operational lifetime, COS-B made 65 observations, 15 of which were devoted to high (>20 deg) galactic latitudes. This database is a collection of maps created from the 65 COS-B observation files. The original observation files can be accessed within BROWSE by changing to the COSBRAW database. For each of the COS-B observation files, the analysis package FADMAP was run and the resulting maps, plus GIF images created from these maps, were collected into this database. Each map is a 120 x 120 pixel FITS format image with 0.5 degree pixels. The user may reconstruct any of these maps within the captive account by running FADMAP from the command line after extracting a file from within the COSBRAW database. The parameters used for selecting data for these product map files are embedded keywords in the FITS maps themselves. These parameters are set in FADMAP, and for the maps in this database are set as 'wide open' as possible. That is, except for selecting on each of 4 energy ranges, all other FADMAP parameters were set using broad criteria. To find more information about how to run FADMAP on the raw event's file, the user can access help files within the COSBRAW database or can use the 'fhelp' facility from the command line to gain information about FADMAP. This is a service provided by NASA HEASARC . https://heasarc.gsfc.nasa.gov/W3Browse/all/cosbmaps.html Archive Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=cosbmaps& GET text/xml 180 99999 true 208.078280517783 -61.6464725152234 20 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=cosbmaps GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_cosbmaps&Action=More+Options&Action=Parameter+Search&ConeAdd=1 COS B 20 Gamma-ray public cosbmaps COS-B Map Product Catalog 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 e_min Minimum Energy float nullable e_max Maximum Energy float nullable "time" Start Time of Observation mjd time.start;obs double nullable end_time Stop Time of Observation mjd time.end;obs 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 bii Galactic Latitude degree pos.galactic.lat double nullable telapse Elapsed Time of Observation s double nullable class Browse Object Classification src.class short nullable exposure Actual Exposure Time in seconds s time.duration;obs.exposure double nullable file_image FITS File Name char nullable observation_id Original Observation Number char nullable lii Galactic Longitude degree pos.galactic.lon double nullable photons Number of Photons int nullable