Tychonic system (English Wikipedia)

Blair, Ann, "Tycho Brahe's critique of Copernicus and the Copernican system", Journal of the History of Ideas, 51, 1990: 355–377, doi:10.2307/2709620, pages 361–362. Moesgaard, Kristian Peder, "Copernican Influence on Tycho Brahe", The Reception of Copernicus' Heliocentric Theory (Jerzy Dobrzycki, ed.) Dordrecht & Boston: D. Reidel Pub. Co. 1972. ISBN 90-277-0311-6, page 40. Gingerich, Owen, "Copernicus and Tycho", Scientific American 173, 1973: 86–101, page 87.
Eastwood, B. S. (1992-11-01). "Heraclides and Heliocentrism – Texts Diagrams and Interpretations". Journal for the History of Astronomy. 23 (4): 233. Bibcode:1992JHA....23..233E. doi:10.1177/002182869202300401. S2CID 118643709.
Pantin, Isabelle (1999). "New Philosophy and Old Prejudices: Aspects of the Reception of Copernicanism in a Divided Europe". Stud. Hist. Philos. Sci. 30 (237–262): 247. Bibcode:1999SHPSA..30..237P. doi:10.1016/S0039-3681(98)00049-1.
Bradley, James (January 1728). "IV. A letter from the Reverend Mr. James Bradley Savilian Professor of Astronomy at Oxford, and F. R. S. to Dr. Edmond Halley Astronom. Reg. &c. giving an account of a new discovered motion of the fix'd stars". Phil. Trans. 35 (406). London: 637–661. doi:10.1098/rstl.1727.0064.

harvard.edu

ui.adsabs.harvard.edu

The sizes Tycho measured turned out to be illusory – an effect of optics, the atmosphere, and the limitations of the eye (see Airy disk or Astronomical seeing for details). By 1617, Galileo estimated with the use of his telescope that the largest component of Mizar measured 3 seconds of arc, but even that turned out to be illusory – again an effect of optics, the atmosphere, and the limitations of the eye [see Ondra, L. (July 2004). "A New View of Mizar". Sky & Telescope. 108 (1): 72–75. Bibcode:2004S&T...108a..72O.]. Estimates of the apparent sizes of stars continued to be revised downwards, and, today, the star with the largest apparent size is believed to be R Doradus, no larger than 0.057 ± 0.005 seconds of arc.
Eastwood, B. S. (1992-11-01). "Heraclides and Heliocentrism – Texts Diagrams and Interpretations". Journal for the History of Astronomy. 23 (4): 233. Bibcode:1992JHA....23..233E. doi:10.1177/002182869202300401. S2CID 118643709.
Rufus, W. Carl (1923). "The astronomical system of Copernicus". Popular Astronomy. 31: 510–521 [512]. Bibcode:1923PA.....31..510R.
Ramasubramanian, K. (1998). "Model of planetary motion in the works of Kerala astronomers". Bulletin of the Astronomical Society of India. 26: 11–31 [23–4]. Bibcode:1998BASI...26...11R.
Ramasubramanian, K. (1998). "Model of planetary motion in the works of Kerala astronomers". Bulletin of the Astronomical Society of India. 26: 11–31 [23–4]. Bibcode:1998BASI...26...11R. Retrieved 2010-03-05.
Pantin, Isabelle (1999). "New Philosophy and Old Prejudices: Aspects of the Reception of Copernicanism in a Divided Europe". Stud. Hist. Philos. Sci. 30 (237–262): 247. Bibcode:1999SHPSA..30..237P. doi:10.1016/S0039-3681(98)00049-1.

adsabs.harvard.edu

Ramasubramanian, K. (1998). "Model of planetary motion in the works of Kerala astronomers". Bulletin of the Astronomical Society of India. 26: 11–31 [23–4]. Bibcode:1998BASI...26...11R. Retrieved 2010-03-05.

iitm.ac.in

physics.iitm.ac.in

Ramasubramanian, K.; Srinivas, M. D.; Sriram, M. S. (1994). "Modification of the earlier Indian planetary theory by the Kerala astronomers (c. 1500 AD) and the implied heliocentric picture of planetary motion]" (PDF). Current Science. 66: 784–790.
Ramasubramanian, K. (1994). "Modification of the earlier Indian planetary theory by the Kerala astronomers (c. 1500 AD) and the implied heliocentric picture of planetary motion" (PDF). Current Science. 66: 784–90.

leosondra.cz

The sizes Tycho measured turned out to be illusory – an effect of optics, the atmosphere, and the limitations of the eye (see Airy disk or Astronomical seeing for details). By 1617, Galileo estimated with the use of his telescope that the largest component of Mizar measured 3 seconds of arc, but even that turned out to be illusory – again an effect of optics, the atmosphere, and the limitations of the eye [see Ondra, L. (July 2004). "A New View of Mizar". Sky & Telescope. 108 (1): 72–75. Bibcode:2004S&T...108a..72O.]. Estimates of the apparent sizes of stars continued to be revised downwards, and, today, the star with the largest apparent size is believed to be R Doradus, no larger than 0.057 ± 0.005 seconds of arc.

semanticscholar.org

api.semanticscholar.org

Eastwood, B. S. (1992-11-01). "Heraclides and Heliocentrism – Texts Diagrams and Interpretations". Journal for the History of Astronomy. 23 (4): 233. Bibcode:1992JHA....23..233E. doi:10.1177/002182869202300401. S2CID 118643709.

st-andrews.ac.uk

www-history.mcs.st-andrews.ac.uk

J J O'Connor and E F Robertson. Bessel biography. University of St Andrews. Retrieved 2008-09-28

stanford.edu

plato.stanford.edu

Stanford Encyclopedia of Philosophy. "John Scottus Eriugena." First published Thu Aug 28, 2003; substantive revision Sun Oct 17, 2004. Accessed April 30, 2014.

thonyc.wordpress.com

Graney, C. M. (March 6, 2012). The Prof says: Tycho was a scientist, not a blunderer and a darn good one too! The Renaissance Mathematicus. http://thonyc.wordpress.com/2012/03/06/the-prof-says-tycho-was-a-scientist-not-a-blunderer-and-a-darn-good-one-too/

ufl.edu

users.clas.ufl.edu

Hatch, Robert. "EARLY GEO-HELIOCENTRIC MODELS". The Scientific Revolution. Dr. Robert A. Hatch. Retrieved 11 April 2018.

web.archive.org

Plait, Phil. (Sept. 14, 2010). Geocentrism Seriously? Discover Magazine. http://blogs.discovermagazine.com/badastronomy/2010/09/14/geocentrism-seriously/#.UVEn7leiBpd Archived 2019-10-25 at the Wayback Machine

webexhibits.org

"Nicholas Copernicus | Calendars".

worldcat.org

Westman, Robert S. (1975). The Copernican achievement. University of California Press. p. 322. ISBN 978-0-520-02877-7. OCLC 164221945 – via Google Books.