Curvature (vertex) of a parabola (figuring)
Curvature of a sphere (figuring)
"Equal slope" case (figuring)
B. Portrait gallery
This Portrait Gallery is intended to give the basic biographical information of 26 great scientific and technical contributors to the historical development of reflecting telescope optics. Such a choice is inevitably personal and to some extent arbitrary. I have chosen the personalities listed below because of their contributions to the form, the theory and the optical quality of the reflecting telescope.
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