Home.md

 Welcome to the pyrate wiki!
 
 ![Achromat](https://cloud.githubusercontent.com/assets/12564815/24765016/89a5d27c-1af6-11e7-9eb7-92d9687486c0.png)
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+An achromat.
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 ![Mirrors with pilot rays](https://cloud.githubusercontent.com/assets/12564815/24765015/896ec6ba-1af6-11e7-85e5-87b29012d8b9.png)
 
+Mirror system with pilot rays.
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 ![Pyrate system with 100 circular field points](https://cloud.githubusercontent.com/assets/12564815/21287091/7c56f076-c464-11e6-9cf9-5d623be63db6.png)
 
+Circular field sampling in FreeCAD Gui.
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+![pyrate_mirrors_comp_parabasal_exact](https://cloud.githubusercontent.com/assets/12564815/24820302/9b8cf4a0-1be8-11e7-8d8b-de0184587145.png)
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+Comparison of real raytrace (blue) with parabasal raytrace (orange).
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 # Status of pyrate (according to email communication)
 
 ## Formulas