"Netwon's Telescope. An Examination Of The Reflecting Telescope Attributed to Sir Isaac Newton In Possession Of The Royal Society"
By A. A. Mills and P. J. Turvey, Department of Astronomy and History of Science, The University of Leicester.
Extracted from "Notes and Records Of the Royal Society Of London" Vol 33. No. 2 March 1979.
PDF, 31 pages including photos and drawings.
Includes Newton's own drawing of what was most likely his first reflector.
https://royalsocietypublishing.org/d...rsnr.1979.0009