PDS_VERSION_ID       = PDS3
LABEL_REVISION_NOTE  = "2007-05-25"

OBJECT               = INSTRUMENT
  INSTRUMENT_HOST_ID = MRO
  INSTRUMENT_ID      = MARCI

  OBJECT             = INSTRUMENT_INFORMATION
    INSTRUMENT_NAME  = "MARS COLOR IMAGER"
    INSTRUMENT_TYPE  = "IMAGING CAMERA"
    INSTRUMENT_DESC  = "

The instrument overview provided here is the summary description
from the EDR SIS (in the document directory).  [MALINETAL2001]
describes the Mars Climate Orbiter MARCI; currently there is no
published MRO-MARCI paper, but a paper describing the
investigation is being written and may be included on future
archive volumes.

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

MARCI is a framing camera with a 1024x1024  pixel  interline
transfer CCD (Kodak KAI-1001) with 9x9 micron pixels.  MARCI
has two  all-refractive  180-degree  'fisheye'  lenses,  one
optimized  for  the  visible  and near-IR and one for the UV
bands.  The beams from these two lenses are brought  to  the
CCD  through  a prism.  A color filter array with seven dif-
ferent bandpasses  (five  visible/near-IR  and  two  UV)  is
directly  bonded  to  the  CCD.  A typical image consists of
seven 'framelets', each 1024 pixels wide and 16 pixels high,
in  each  of  these  bandpasses.   The  visible bands can be
optionally summed; the UV bands are always summed 8x8.   The
visible resolution from 300 km is about 1 km/pixel at nadir.

The core of the MARCI electronics is a Motorola  56166  DSP,
which  interfaces  to  the  spacecraft,  generates  the  CCD
clocks, and received digitized pixels from an Analog Devices
AD1672 analog-to-digital converter.  Both lossless and lossy
image data compression can be applied by software running in
the spacecraft computer.

MARCI was originally designed for the Mars  Climate  Orbiter
mission.  For MRO, a separate subsystem, the MARCI Interface
Adapter or MIA, was designed and built to translate the  MRO
command/data  protocol into a form that could be interpreted
by the heritage MARCI hardware.

"

  END_OBJECT         = INSTRUMENT_INFORMATION

  /*  The INSTRUMENT_REFERENCE_INFO object provides a pointer to
  /*  related reference publications or private communications. Only
  /*  the key is provided in this file.  The catalog object which
  /*  provides the full citation is delivered separately.

  OBJECT             = INSTRUMENT_REFERENCE_INFO
    REFERENCE_KEY_ID = MALINETAL2001
  END_OBJECT         = INSTRUMENT_REFERENCE_INFO

END_OBJECT           = INSTRUMENT

END