Chandler, Seth Carlo, 1846-1913

Astronomer (variable stars, variation of latitude, and geodesy) and life insurance actuary. Aid, U. S. Coast and Geodetic Survey, 1864-1870; staff, Harvard College Observatory from 1881; editor, Astronomical Journal from 1896.

American astronomer. Boston English High School; L.L.D., DePauw University, 1891. After attending high school, he became a personal astronomical assistant, 1863-1869, to Benjamin A. Gould; from 1870 to 1885 he worked as a life insurance actuary. Also during this time, between 1880 and 1885, he continued his astronomical studies at Harvard College Observatory. Between 1886 and 1904, Chandler conducted private astronomical investigations in Cambridge, Massachusetts. His research advanced the knowledge of variable stars and comets. He classified approximately 500 variables in his catalogues. From 1896 to 1912, he was editor of the 'Astronomical Journal'.

Seth Carlo Chandler (1846-1913) was an astronomer. He was he was educated at Boston English High School and earned an LL. D. at DePauw University. He was a research associate at the Harvard College Observatory from 1881 to 1885 or 1886. His chief contribution to instrumental astronomy was the invention of an almucantar. This allowed him to make the discovery for which he is best known, the "Chandler Wobble," a movement in the Earth's axis of rotation.