Data Set Overview
  =================
    This dataset contains color mosaics produced from Pancam images 
    of the Mars Exploration Rover mission. These products were 
    generated by Jim Bell and Jonathan Joseph of the Pancam science 
    team.


  Processing
  ==========
    Individual raw Pancam Experiment Data Records (EDRs) were 
    calibrated to radiance, radiance factor, and estimated Lambert 
    Albedo following the methods described in BELLETAL2006. They were 
    then map projected into simple cylindrical and/or vertical 
    projection mosaics using software specifically designed for 
    mosaicking of MER/Pancam images, and developed under the direction 
    of Pancam Payload Element Lead Prof. Jim Bell. The mapping 
    software uses information from the geometric calibration of the 
    cameras to correct for slight lens distortions. Slight variations 
    in lighting conditions among images within a mosaic have been 
    corrected using small automated and/or manual multiplicative 
    scaling of individual frames to achieve output mosaics that are as 
    seamless as possible. Large variations in lighting conditions, for 
    example in mosaics spanning a large range of Martian local solar 
    time or spanning multiple Martian days, have not been corrected.
   
    Additional post-processing using commercial image processing tools 
    like Adobe Photoshop has been applied to many of these mosaics in 
    order to filter out single or small groups of 'hot pixels' or to 
    attempt to manually correct particularly harsh seam boundaries. 
    For some mosaics including the horizon, choppy or limited coverage 
    of the sky has been replaced with a representation of the way the 
    sky would have appeared if the coverage had been complete, using 
    actual sky colors from the data's original partial sky coverage.
    
    These archived mosaics were created primarily for public education 
    and outreach purposes, and have been created in false color, 
    approximate true color, and red/blue 3-D anaglyph representations. 
    Substantial additional information and details about these mosaics 
    can be found online on the Pancam Home web site at 
    http://pancam.sese.asu.edu/, following the 'Images' link. 
    Additional details about true color representations of the Martian 
    landscape can be found in BELLETAL2006 and BELLETAL2006B. While 
    they can serve some potential scientific interests (such as basic 
    assessments of geology and geomorphology), because of the 
    sometimes rather qualitative post-processing applied to many of 
    these Pancam mosaics, they should not be used for quantitative 
    image analysis work. 


  File Naming
  ===========
    The PDS file naming scheme adopted for these mosaics begins with 
    either a target name assigned by the MER team, the name of the 
    large-format mosaic or panorama assigned by the MER team, or a 
    simple sol, rover (A = Spirit, B = Opportunity), and Pancam 
    sequence designator (Pnnnn). This is often followed by a brief 
    indicator of the specific camera (L = left or R = right) and 
    filter (numbers 1-7) indicator, using the filter designation codes 
    described in BELLETAL2003. Finally, a designator is often provided 
    to identify the image as a false color composite (F), an 
    approximate true color composite (ATC), or an anaglyph (ANA or 
    STEREO) intended to be viewed with red/blue glasses (red on the 
    left).

    For example:
    SOL2642B_P2354_L257F: 
        Opportunity sol 2642, Pancam sequence 2354, left camera, false 
        color composite RGB from filters L2, L5, and L7.
    SOL661A_P2401_L256ATC: 
        Spirit sol 661, Pancam sequence 2401, left camera, approximate 
        true composite RGB from filters L2, L5, and L76.
    THANKSGIVING_STEREO: 
        The Spirit rover's 'Thanksgiving Panorama', details of which 
        can be found at http://pancam.sese.asu.edu/, following the 
        'Images' link, choosing the '360 deg. Panoramas' link, then 
        clicking on the 'Thanksgiving Pan' link.
    BURNS_CLIFF_L257F.TIF:  
        The Opportunity rover's 'Burns Cliff' mosaic, details of which 
        can be found at http://pancam.sese.asu.edu/, following the 
        'Images' link, choosing the 'Small Panoramas and Mosaics' 
        link, then clicking on the 'Burns Cliff 180 deg.' link. This 
        is a false color mosaic acquired in the Pancam left camera's 
        filters L2, L5, and L7.
        
    
  Point of Contact for More Details
  =================================
  Prof. Jim Bell
  School of Earth & Space Exploration 
  Arizona State University 
  Box 876004,  Tempe, AZ 85287-6004 
  email: Jim.Bell@asu.edu
  Office: (480) 965-1044

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