@NASAWebbTelescp If the tertiary mirror is smaller than the secondary mirror, why does the secondary mirror have a convex shape?
Replying to @darshanmf1
@darshanmf1 Standard Cassegrain design to have convex secondary. JWST is 3-mirror anastigmat variation; tertiary removes abberations.
10:14 AM - 15 Mar 2016
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