GALEXLOG - Galaxy Evolution Explorer (GALEX) Observation Log
The GALEX mission also includes an Associate Investigator program for additional observations and supporting data analysis which supports a wide variety of investigations made possible by the first UV sky survey.
The HEASARC provides this table of GALEX observations as an assistance to the high-energy astrophysics community, e.g., to enable cross-correlations of GALEX with X-ray observations. The GALEX data are available via MAST at http://galex.stsci.edu/. More information about GALEX can be found at http://www.galex.caltech.edu/ and https://asd.gsfc.nasa.gov/archive/galex/.
GALEX Archive Search Tool at Caltech: http://sherpa.caltech.edu/gips/ref/galex_obs_status.csv
The observation designation. Note that because GALEX is a survey mission only targets listed as part of the GI program (names beginning with 'GI') are guaranteed to be observed with at least the listed 'Planned Exposure Time'.
The sub-visit number.
The Right Ascension of the pointing in the selected equinox. This was given in J2000.0 decimal degrees in the original table.
The Declination of the pointing in the selected equinox. This was given in J2000.0 decimal degrees in the original table
The Galactic Longitude of the pointing direction.
The Galactic Latitude of the pointing direction.
This parameter flag indicates the GALEX observation type:
g = Grism i = Imaging u = Unknown
A code indicating the type of GALEX survey under which the observation was carried out (the sensitivities of the asterisked types are discussed in https://asd.gsfc.nasa.gov/archive/galex/Documents/ERO_data_description_2.htm), as follows:
AIS - All Sky Survey* CAI - Calibration Imaging CAS - Calibration Spectroscopy DIS - Deep Imaging Survey* DSS - Deep Spectroscopic Survey* ETI - Exceptional Imaging Survey ETS - Exceptional Spectroscopic Survey GII - Guest Investigator Imaging GIS - Guest Investigator Spectroscopy MIS - Medium Imaging Survey* MSS - Medium Spectroscopic Survey* NGS - Nearby Galaxy Survey* UDIS- Ultra-Deep Imaging Survey* WSS - Wide Spectroscopic Survey*
The number of separate exposures with the FUV detector that comprise the total FUV exposure time.
The number of separate exposures with the NUV detector that comprise the total NUV exposure time.
The planned exposure time, in seconds (s). This parameter can be used to determine if further observations are planned. If the column has 0 (for 'completed') or is less then the 'Total Exposure Time' then no further observations are planned. If the value is non-zero and greater then the 'Total Exposure Time' then further observations are likely to be scheduled to achieve the 'Planned Exposure Time'. If the value is negative, then the observation resulted in an overcountrate shutdown of the FUV and/or NUV detector, and no further observations will be made.
The total FUV detector exposure achieved, in seconds (s).
The total NUV detector exposure achieved, in seconds (s).
The available GALEX Data Release 4/5 (GR4/GR5) FUV archival exposure, in seconds (s).
The available GALEX Data Release 4/5 (GR4/GR5) NUV archival exposure, in seconds (s).