N. R. Pogson

Norman Robert Pogson
Born(1829-03-23)23 March 1829
Nottingham, England
Died23 June 1891(1891-06-23) (aged 62)
Chennai, India
NationalityEnglish
AwardsLalande Prize (1856)
Scientific career
FieldsAstronomy

Norman Robert Pogson, CIE (23 March 1829 – 23 June 1891) was an English astronomer who worked in India at the Madras observatory. He discovered several minor planets and made observations on comets.[1] He introduced a mathematical scale of stellar magnitudes with the ratio of two successive magnitudes being the fifth root of one hundred (~2.512) and referred to as Pogson's ratio.

  1. ^ Vibart, Henry Meredith (1885–1900). "Pogson, Norman Robert" . Dictionary of National Biography. London: Smith, Elder & Co.