Reflecting anastigmatic optical systems hold several inherent advantages over refracting equivalents; such as compactness, absence of color, high “refractive efficiency”, wide bandwidth, and size-scalability to enormous apertures. Such advantages have led to these systems becoming, increasingly since their first deliberate development in 1905, the “go-to” solution for various classes of optical design problem. This paper describes in broad terms the history of the development of this class of optical system, with an emphasis on the early history.
Andrew Rakich, Andrew Rakich,
"Reflecting anastigmatic optical systems: a retrospective", Proc. SPIE 10590, International Optical Design Conference 2017, 105901S (27 November 2017); doi: 10.1117/12.2293432; https://doi.org/10.1117/12.2293432