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Chester Moore Hall 
Summary
Chester Moore Hall (9 December 1703, Leigh, Essex, England – 17 March 1771, Sutton) 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.
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 edit
- List of largest optical telescopes in the 18th century
- John Dollond (also developed achromats in the 1750s)
References edit
- ^ "Chester Moor Hall". Encyclopædia Britannica. Retrieved 25 May 2016.
- ^ 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.
- ^ Daumas, Maurice, Scientific Instruments of the Seventeenth and Eighteenth Centuries and Their Makers, Portman Books, London 1989 ISBN 978-0-7134-0727-3
- ^ Agnes M. Clerke, A Popular History of Astronomy during the Nineteenth Century, 4th ed., Adam and Charles Black, 1902
- ^ Cottrell, Geoff (2016). Telescopes: A Very Short Introduction. Oxford University Press. ISBN 9780198745860.
- ^ 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.