PDS_VERSION_ID        = PDS3                                                  
RECORD_TYPE           = STREAM                                                
OBJECT                = TEXT                                                  
  PUBLICATION_DATE    = 2000-03-17                                            
  NOTE                = "Description of unusable images in the DATA           
    direcory of the Stardust NAVCAM Preflight Raw Calibration Archive"        
END_OBJECT            = TEXT                                                  
END                                                                           
                                                                              
Stardust NAVCAM Preflight Raw Calibration Archive - Unusable Data Products    
                                                                              
This document describes the problems of the 75 unusable images (that is,      
data products) located in the DATA/UNUSABLE directory of the Stardust         
Navcam Preflight Raw Calibration Archive.  These images should never be       
used to improve the calibration process or generate derived products.  The    
problems, uncovered during calibration analysis for the Stardust mission,     
are grouped into three distinct categories:                                   
                                                                              
  1) Images that were deemed "unusable" by the scientists conducting the      
     calibration.  This situation often arose during the calibration          
     process when difficulty arose during the operation of the Ground         
     Support Equipment (GSE).                                                 
                                                                              
  2) Images have been scanned for required features in the datastream and     
     those features were not present.  These features are:                    
                                                                              
       a) sync pattern of the form 0x0000, at the beginning of each line.     
                                                                              
       b) a line count on each line, represented as a 2-byte unsigned         
          integer, indicating the current line number.  This counter          
          starts at 0 and counts to 1023.  This value should be present       
          just after the sync pattern mentioned in part (a) above.            
                                                                              
    These two features are generated by the camera as the data was sent to    
    the Ground Support Equipment (GSE).  If these features are not present    
    in an image, this means that the image was not transferred properly       
    and can not be considered a valid image.                                  
                                                                              
  3) Images were found amongst the calibration data, but no record was        
     found regarding the circumstances around which the images were           
     acquired.  These images, in all likelyhood, are perfectly valid          
     images, but information surrounding the acquisition of these images      
     is not know.  Required information includes exposure time, filter        
     used, radiance value of the calibration source, etc. and can not be      
     determined.                                                              
                                                                              
Below is a list of the 75 unusable images in the DATA/UNUSABLE/ directory.    
Please note the third character in the filename designates the                
thermal-vacuum operating temperature where 3 = 30 deg Celsius,                
4 = 40 degCelsius, and 5 = 50 deg Celsius.                                    
                                                                              
    NC3_0001.FIT                                                              
    NC3_0073.FIT                                                              
    NC3_0074.FIT                                                              
    NC3_0075.FIT                                                              
    NC3_0124.FIT                                                              
    NC3_0125.FIT                                                              
    NC3_0315.FIT                                                              
    NC3_0325.FIT                                                              
    NC3_0333.FIT                                                              
    NC3_0334.FIT                                                              
    NC3_0368.FIT                                                              
    NC3_0369.FIT                                                              
    NC3_0376.FIT                                                              
    NC3_0446.FIT                                                              
    NC4_0447.FIT                                                              
    NC4_0448.FIT                                                              
    NC4_0449.FIT                                                              
    NC4_0450.FIT                                                              
    NC4_0451.FIT                                                              
    NC4_0452.FIT                                                              
    NC4_0453.FIT                                                              
    NC4_0454.FIT                                                              
    NC4_0455.FIT                                                              
    NC4_0456.FIT                                                              
    NC4_0457.FIT                                                              
    NC4_0458.FIT                                                              
    NC4_0459.FIT                                                              
    NC4_0460.FIT                                                              
    NC4_0461.FIT                                                              
    NC4_0462.FIT                                                              
    NC4_0463.FIT                                                              
    NC4_0464.FIT                                                              
    NC4_0465.FIT                                                              
    NC4_0496.FIT                                                              
    NC4_0542.FIT                                                              
    NC4_0543.FIT                                                              
    NC4_0557.FIT                                                              
    NC4_0558.FIT                                                              
    NC4_0614.FIT                                                              
    NC4_0615.FIT                                                              
    NC4_0620.FIT                                                              
    NC4_0621.FIT                                                              
    NC4_0622.FIT                                                              
    NC4_0623.FIT                                                              
    NC4_0671.FIT                                                              
    NC4_0672.FIT                                                              
    NC4_0673.FIT                                                              
    NC4_0674.FIT                                                              
    NC4_0675.FIT                                                              
    NC4_0676.FIT                                                              
    NC4_0684.FIT                                                              
    NC4_0685.FIT                                                              
    NC4_0686.FIT                                                              
    NC4_0687.FIT                                                              
    NC4_0688.FIT                                                              
    NC4_0689.FIT                                                              
    NC4_0695.FIT                                                              
    NC4_0696.FIT                                                              
    NC4_0770.FIT                                                              
    NC5_0971.FIT                                                              
    NC5_0982.FIT                                                              
    NC5_1105.FIT                                                              
    NC5_1106.FIT                                                              
    NC5_1148.FIT                                                              
    NC5_1249.FIT                                                              
    NC5_1254.FIT                                                              
    NC5_1259.FIT                                                              
    NC5_1260.FIT                                                              
    NC5_1262.FIT                                                              
    NC5_1270.FIT                                                              
    NC5_1278.FIT                                                              
    NC5_1306.FIT                                                              
    NC5_1307.FIT                                                              
    NC5_1340.FIT                                                              
    NC5_1341.FIT