Refracting telescope (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Refracting telescope" in English language version.

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archive.org

astronautix.com

books.google.com

cambridge.org

assets.cambridge.org

doi.org

explorepahistory.com

griffithobservatory.org

gutenberg.org

  • Bell, Louis (1922). The Telescope. New York: McGraw-Hill – via The Project Gutenberg.

handle.net

hdl.handle.net

hanwellobservatory.org.uk

harvard.edu

ui.adsabs.harvard.edu

imss.fi.it

brunelleschi.imss.fi.it

intellectualmathematics.com

  • "Phases of Venus". Intellectual Mathematics. 2 June 2019. Retrieved 27 September 2020.

lowell.edu

nasa.gov

antwrp.gsfc.nasa.gov

nautil.us

usno.navy.mil

nih.gov

pubmed.ncbi.nlm.nih.gov

northern-stars.com

  • "Telescope Calculations". Northern Stars. Retrieved 20 December 2013.

rauantiques.com

rmg.co.uk

collections.rmg.co.uk

si.edu

americanhistory.si.edu

airandspace.si.edu

space.com

starizona.com

stjarnhimlen.se

stsci.edu

amazing-space.stsci.edu

web.archive.org