PROCEDURE:

The VIRS radiometric sensitivity depends weakly on temperature.  The temperature coeffcient for the VIRS detector sensitivities as a function of wavelength were measured during thermal vacuum testing by observing a stable quartz halogen lamp located outside the vacuum enclosure.  A set of data includes first a dark observation by closing the instrument shutter, a signal measurement of the lamp, and another dark measurement.  Thirteen sets of data were acquired over a large temperature range.

FILE DESCRIPTIONS:

one set of data:
  LAMPA_BACK1__BBBBBBBB_CCCCCC.rec
  LAMPA__BBBBBBBB_CCCCCC.rec
  LAMPA_BACK2__BBBBBBBB_CCCCCC.rec
where:
A is the set number, 1 through 13.
BBBBBBBB is the date in YYYYMMDD format, unique for each file.
CCCCCC is the time in HHMMSS format, unique for each file.

example:
  LAMP1_BACK1__20030406_173957.rec
  LAMP1__20030406_174057.rec
  LAMP1_BACK2__20030406_174152.rec
These three data files were acquired close in time and so at the same temperature.  This is the first data set, consisting of first a dark scan (BACK1) followed by a signal scan, and finally another dark scan (BACK2).