From: boyd@apt0.sao.arizona.edu   
      
   Louis Boyd wrote:   
      
   > The solution is a low noise detector and long integration times. I'd   
   > expect  CCD cooled to about -40 C and hour exposures should give results   
   > similar to the website above.   
      
   Sorry, I forgot to post the website:   
   http://www.fluomin.org/uk/fiche.php?id=29   
      
   It leads to a lot of info on luminescent minerals and their spectra.   
      
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    * Origin: you cannot sedate... all the things you hate (1:229/2)