PDS_VERSION_ID       = PDS3
NOTE                 = "ASCII file providing information
                       about the SIR instrument"
LABEL_REVISION_NOTE  = "2010-04-20, Bjoern Grieger
                       (ESA/SRE-OS)"
RECORD_TYPE          = STREAM
OBJECT               = INSTRUMENT
  INSTRUMENT_HOST_ID = "S1"
  INSTRUMENT_ID      = "SIR"
  OBJECT             = INSTRUMENT_INFORMATION
    INSTRUMENT_NAME  = "SMART-1 INFRA-RED SPECTROMETER"
    INSTRUMENT_TYPE  = "INFRARED SPECTROMETER"
    INSTRUMENT_DESC  = "

SIR is  a  highly  compact, grating, near-infrared point spectrometer,
covering the wavelength range between 0.9  and  2.4  microns,  with  a
spectral resolution of approximately 6 nm.

     The  near-infrared  spectrometer SIR consists of three individual
units:

*  O-Box (front-end optics), located on an extension  of  the  Anti-SS
   panel

*  Sensor-Head/Radiator  Unit  (spectrometer),  located on the Anti-SS
   panel

*  E-Box (digital electronics and power converter), located inside the
   S/C cube on the Anti-SS panel

These units are linked by:

*  An optical fiber connecting O-Box and Sensor-Head/Radiator Unit

*  An  electrical  harness  (ILH) connecting Sensor-Head/Radiator Unit
   and E-Box

     SIR collects the Sun's light reflected by the Moon with the  help
of  the  optical box (O-Box) which houses a main and secondary mirror.
This light then enters an optical fiber, which transmits the light  to
the  Sensor-Head/Radiator  Unit.   Inside  the  Sensor-Head  the light
passes filter, slit and the quartz body  and  reaches  the  dispersing
grating.   The  dispersed  light  then passes the quartz body again to
reach a second order filter, which is glued onto the detector  window.
After  passing this window the light is detected by the photosensitive
pixels.  The electrons released by the individual pixels are collected
and  a sequential read out is performed after the integration time has
ended.  The adjacent voltage will be measured for each pixel  and  the
obtained values are converted to digits.  The obtained values (counts)
are finally embedded in the TM packages in order to send them  to  the
spacecraft's mass memory.

"

  END_OBJECT         = INSTRUMENT_INFORMATION
  OBJECT             = INSTRUMENT_REFERENCE_INFO
    REFERENCE_KEY_ID = "NO REFERENCE"
  END_OBJECT         = INSTRUMENT_REFERENCE_INFO
END_OBJECT           = INSTRUMENT
END