18 February 2004 Complete solution set for four-spherical-mirror anastigmatic telescope systems
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The concept of the simplest possible reflecting anastigmat is discussed and anastigmats consisting of four spherical mirrors are introduced in this context as being the last remaining family for which the solution set has not been thoroughly mapped. A method for mapping the solution space for four-spherical-mirror anastigmats is described and results are presented. Analysis of the large number of solutions obtained in this way is in its initial stages, and some of the early results are presented here.
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Andrew Rakich, Norman J. Rumsey, "Complete solution set for four-spherical-mirror anastigmatic telescope systems", Proc. SPIE 5249, Optical Design and Engineering, (18 February 2004); doi: 10.1117/12.513197; https://doi.org/10.1117/12.513197

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