PDS_VERSION_ID       = PDS3
LABEL_REVISION_NOTE  = "2010-01-15 M.Buie Created;"
RECORD_TYPE          = STREAM

OBJECT               = INSTRUMENT
  INSTRUMENT_HOST_ID = MRO24M
  INSTRUMENT_ID      = PHOTDOC

  OBJECT             = INSTRUMENT_INFORMATION
    INSTRUMENT_NAME  = "PORTABLE HIGH-SPEED OCCULTATION TELESCOPE DOC CAMERA"
    INSTRUMENT_TYPE  = "CAMERA"
    INSTRUMENT_DESC  = "


  Instrument Overview 
  ===================

  This file contains a brief statement of the characteristics of the PHOTDOC
  camera. For details the reader is referred to Young et al. 2010.
  
  Scientific Objectives
  =====================

  High-speed photometric imaging of the LCROSS impact site.

  Calibration
  ===========

  Dark and bias corrections done by collecting unilluminated exposures
  of the same exposure time as the data and subtracting.  Flat fielding
  is done with twilight-sky flat field images.

  Operational Considerations
  ==========================
  
  The instrument is manually operated through a GUI control.  Starting
  exposures and recording the start time requires a manual to coordinate
  both cameras.  The start time, though manual, has the full GPS precision
  of time quality because the accurate start time is displayed on the
  screen after starting.  The data acquisition software was WinView as
  supplied by the camera vendor.

  Detectors
  =========
  
  The camera has a 512x1024 frame-transfer CCD.  Only one half of the device
  is receptive to light (512x512) while the other half is covered for use
  during the frame-transfer readout.  Further information can be found in
  Eliot et al. 2010 [ELIOTETAL2010].
  
  Electronics
  ===========
  
  The camera is a standard PhotonMax camera sold by Princeton Instruments.
  
  Filters
  =======
  
  Filters are external to the instrument and described in the data set 
  catalog file PHOTDOC_DS.CAT for the LCROSS data set 
  EAR-L-MRO24M_PHOTDOC-2-EDR-LCROSS-V1.0.
  
  Optics
  ======
  
  None.
  
  Location
  ========
  
  Naysmith focus of the Magdalena Ridge Observatory 2.4-m telescope.
  
  Operational Modes
  =================

  Frame-transfer mode with the 1Mhz pixel clocking readout rate.

  Subsystems
  ==========
  
  None.
  
  Measured Parameters
  ===================

  Gain and sensitivity calibration values are stored in the image headers.
  
  "
  END_OBJECT         = INSTRUMENT_INFORMATION
  
  
  OBJECT             = INSTRUMENT_REFERENCE_INFO
    REFERENCE_KEY_ID = YOUNGETAL2010
  END_OBJECT         = INSTRUMENT_REFERENCE_INFO
  
END_OBJECT           = INSTRUMENT
END