Answers are grounded in this paper and cite their sources.
New types of prime focus field correctors for Ritchey–Chrétien telescopes are described, which have substantially better imaging than those at present in use. Examples are an improved corrector for the |f/2.7| focus of the Cerro Tololo 4-m telescope, and a wider field |(2^∘_. 0)| corrector for the Anglo–Australian telescope.
No takes yet. Share an insight, caveat, or question.
C. G. Wynne (1989) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: