Instrument Overview
  ===================
 
  The LCROSS mid-infrared camera #1 (MIR1) is a ruggedized vanadium oxide
  (VOx) microbolometer MIRIC TB2-30, from Thermoteknix Ltd.  MIR1's focal
  plane uncooled microbolometer sensor has a 164 [H] x 128 [V] pixel
  resolution and is digitized at 14-bit resolution.
 
  MIR1 is one of two mid-infrared (7.5-13.5 micron) cameras carried by LCROSS.
  MIR1 contains a 6-10 micrometer bandpass filter, while MIR2 is filter-less.
  This is the primary difference between the cameras. There are other
  differences due to the fact that MIR2 is manufactured by Flir Systems/Indigo
  Operations and has been set to different factory defaults.
 
  MIR1 has a 30 mm, f/1.6 lens providing a 15.0 deg [H] x 11.0 deg
  [V] (18.6 deg [Diagonal]) field-of-view.
 
  Although the camera's native format is 164 [H] x 128 [V] 14-bit images,
  the images are converted by the DHU GSEOS software to 160 [H] x 120 [V]
  14-bit images.
 
  Internal to both MIR modules is an instrumented-motorized shutter
  to provide a reference for temperature measurements.  The camera's
  peak power during operation is 1.3 W.  The gain, which determines
  the sensitivity to temperature scenes, is configurable with a
  command sent to the camera.
 
  MIR1 is backfilled with dry gas to prevent degradation due to
  humidity for terrestrial applications and does not contain any
  component volatile in vacuum.
 
  Scientific Objectives
  =====================
 
  The main science objectives for the mid infrared cameras (MIR1 &
  MIR2) are to provide pre- and post-impact thermal images of the
  impact terrain and identify the location of the Centaur
  impact-created crater. In addition, these cameras will obtain
  thermal evolution of the ejecta plume (which is dependent on the
  water content) and observe the ejecta blanket and freshly exposed
  regolith at mid-infrared wavelengths.
 
  Calibration
  ===========
 
  Conversion from raw data values [DN] to a scene temperature
  (degrees C) is described in the LCROSS Instrument Response and
  Calibration Report.  The relationship is gain dependent.  High
  sensitivity/High Gain (low scene temperature) is used for the
  majority of the mission data.  The relationship is also sensor
  temperature dependent. Pre-flight DN to scene temperature was only
  performed at room temperature (+17 to +21 C) during requirement
  validation, mainly at atmosphere with very limited vacuum testing.
  A calibration for the flight mid-infrared camera images is
  provided using a high-fidelity thermal model of the moon's south
  pole at the time of impact from the LRO Diviner team to map raw
  data values [DN] to temperature (degrees C).
 
  In addition, the MIR camera units are programmed to perform a flat
  field correction (FFC) every 2 minutes. Flat Field Correction
  (also known as NUC or single point correction) is the process of
  measuring the output and creating an offset for every pixel so
  that the output becomes totally uniform (Flat). Internal to both
  MIR modules is an instrumented-motorized shutter to provide a
  reference for this FFC.
 
  The MIR cameras both experience settling time effects that
  asymptote away approximately 10 minutes after instrument power
  on. Calibrations for these instruments are valid for only this
  steady state condition.
 
  The gain settings are documented with each image.
 
  Operational Modes
  =================
 
  The LCROSS mid-infrared cameras have a single mode change
  parameter - high vs. low gain.  The majority of the mission data
  is taken in high sensitivity or high gain. This gain setting is
  best suited for low scene temperatures (temperature < +150 C). The
  low temperature floor sensitivity for this mode was measured to be
  ~-50 C. The other setting, low sensitivity or low gain is better
  suited for high scene temperatures (+150 C < temperature < +500
  C).  Only quicklook-29k data toggles between the two gain settings
  as a part of a health and status checkout.