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    Thanks for visiting!

The site started in 1998. Back then it was only a few pages wrapped around the HaloSim halo simulation software.   It's still being extended with its sister site Optics Picture of the Day.   I've enjoyed putting the site together, learning more about the different sky phenomena while doing so and seeing your wonderful pictures.  It has been a privilege to include them on the site. 

  For a while I am not accepting new images for the site.
      
Please do not ask for comments on images by other photographers, for example pictures appearing on Facebook or YouTube videos.

         
     
Les Cowley
    
  A request to use images or text?   First please read
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