Chester Moore Hall

Chester Moore Hall (9 December 1703, Leigh, Essex, England – 17 March 1771, Sutton, Surrey) was a British lawyer and inventor who produced the first achromatic lenses in 1729 or 1733 (accounts differ). He used the achromatic lens to build the first achromatic telescope, a refracting telescope free from chromatic aberration (colour distortion).[1]

He lived at New Hall, Sutton, Surrey.

His name was also spelled Chester Moor Hall[2][3] and Chester More Hall.[4]

The design had two elements, a crown and flint glass, that brought two wavelengths of light to a focus.[5]

Chester is noted as having made the first twin color corrected lens in 1730.[6]

See also


  1. "Chester Moor Hall". Encyclopædia Britannica. Retrieved 25 May 2016.
  2. Sphaera – Peter Dollond answers Jesse Ramsden – A review of the events of the invention of the achromatic doublet with emphasis on the roles of Hall, Bass, John Dollond and others.
  3. Daumas, Maurice, Scientific Instruments of the Seventeenth and Eighteenth Centuries and Their Makers, Portman Books, London 1989 ISBN 978-0-7134-0727-3
  4. Agnes M. Clerke, A Popular History of Astronomy during the Nineteenth Century, 4th ed., Adam and Charles Black, 1902
  5. Cottrell, Geoff (2016). Telescopes: A Very Short Introduction. Oxford University Press. ISBN 9780198745860.
  6. Tromp, R. M. (December 2015). "An adjustable electron achromat for cathode lens microscopy". Ultramicroscopy. 159 Pt 3: 497–502. doi:10.1016/j.ultramic.2015.03.001. ISSN 1879-2723. PMID 25825026.

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