In case someone missed the latest news:
http://www.astro-physics.com/product...665/92f665.htm
The optimization was chosen for the polychromatic Strehl ratio to be above 90% for the entire visual spectrum with a peak value of 99.8% at the visual peak. The result is unprecedented color correction. Visually the scope shows sharp contrasty images without color fringing with well corrected high power oculars.
