LASCO Filter Spectral Data                                                    
                                                                              
The spectral transmittance of the LASCO filters is given in two different     
formats: PNG plots and ASCII text files. The ASCII data files are two         
columns of wavelength and transmittance (recorded in the calib/filter/
directory).            

   * C2                                                                       
        o All Filters (PNG)                                                   
        o Blue        (PNG   ASCII)                                           
        o Orange      (PNG   ASCII)                                           
        o Red         (PNG   ASCII)                                           
        o H-alpha     (PNG   ASCII)                                           
                                                                              
   * C3                                                                       
        o All Filters              (PNG)                                      
        o Blue                     (PNG   ASCII)                              
        o Orange                   (PNG   ASCII)                              
        o Red                      (PNG   ASCII)                              
        o Clear                    (PNG   ASCII)                              
        o Infrared                 (PNG   ASCII)                              
        o H-alpha                  (PNG   ASCII)                              
        o I-75 (always in the beam)(PNG   ASCII)                              
                                                                              
Note that c2_all.png includes 2 orange filter curves to give a sense
of the uncertainty in determining transmittance. In c3_all.png, the
I-75 curve is not shown as it is folded into the clear filter curve.
There are some small negative numbers in the tables for transmittance
due to noise.
                                                                              
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Downloaded: http://lasco-www.nrl.navy.mil/index.php?p=content/filter/filter
Modified: 15 Mar 2006, Matthew Knight
          31 Jan 2008, Matthew Knight