P.S. Википедия сомнительный авторитет.
Notes:
Hall, A. Rupert (1992). Isaac Newton: Adventurer in Thought. Cambridge University Press. p. 67. ISBN 9780521566698.
Ingalls, Albert G., ed. (1935). Amateur Telescope Making (4th ed.). Munn and Co., Inc. [1]
Sacek, Vladimir (2006-07-14). "8.1.1. Newtonian off-axis aberrations". Retrieved 2009-09-29. off-axis performance of the paraboloidal mirror drops so quickly with the increase in relative aperture beyond ~ƒ/6
Knisely, David (2004). "Tele Vue Paracor Coma Corrector for Newtonians" (PDF). Cloudy Nights Telescope Review. Retrieved 29 November 2010.
Alex Hebra (2010). The Physics of Metrology: All about Instruments: From Trundle Wheels to Atomic Clocks. Springer Science & Business Media. pp. 258–259. ISBN 978-3-211-78381-8.
Antony Cooke (2009). Make Time for the Stars: Fitting Astronomy into Your Busy Life. Springer Science & Business Media. p. 14. ISBN 978-0-387-89341-9.
"Schmidt-Newton telescope". telescopeOptics.net. Retrieved 28 August 2012.
Rutten, Harrie G. J.; van Venrooij, Martin A.M. (1988). Telescope Optics: Evaluation and design. ISBN 9780943396187.
Mollise, Rod (28 February 2009). Choosing and Using a New CAT. p. 101. ISBN 9780387097725.
10.1.2. Sub-aperture corrector examples: Single-mirror systems – Jones-Bird
"TELESCOPES – OVERVIEW AND TELESCOPE TYPES, CATADIOPTRIC NEWTONIAN". Archived from the original on 2020-08-11. Retrieved 2014-11-18.
Fred Watson (2007). Stargazer: The Life and Times of the Telescope. Allen & Unwin. p. 108. ISBN 978-1-74176-392-8.
The Galileo Project > Science > Zucchi, Niccolo
Derek Gjertsen (1986). The Newton Handbook. Routledge & Kegan Paul. p. 562. ISBN 978-0-7102-0279-6.
Michael White (1999). Isaac Newton: The Last Sorcerer. Basic Books. p. 169. ISBN 978-0-7382-0143-6.
Michael White (1999). Isaac Newton: The Last Sorcerer. Basic Books. p. 170. ISBN 978-0-7382-0143-6.
Newton thought little could be done to correct aberration short of making lenses that were f/50 or more."the object-glass of any telescope cannot collect all the rays which come from one point of an object, so as to make them convene at its focus in less room than in a circular space, whose diameter is the 50th part of the diameter of its aperture”
Stephen Parkinson (1870). A Treatise on Optics. Macmillan. p. 112.
Raymond N. Wilson (2007). Reflecting Telescope Optics I: Basic Design Theory and its Historical Development. Springer Science & Business Media. p. 9. ISBN 978-3-540-40106-3.
telescope-optics.net Reflecting Telescopes: Newtonian, two- and three-mirror systems
amazing-space.stsci.edu – Hadley’s Reflector
The complete Amateur Astronomer – John Hadley's Reflector
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