Steven Scott Vogt (born December 20, 1949) is an American astronomer[4] of German descent whose main interest is the search for exoplanets.
He is credited, along with R. Paul Butler, for discovering Gliese 581 g, the first potentially habitable planet outside of the Solar System.
[9] He is a professor of astronomy and astrophysics at the University of California, Santa Cruz,[10] and is known worldwide for designing and building HIRES, a high-resolution optical spectrometer mounted permanently on the W. M. Keck Observatory 10-meter telescope on Mauna Kea, Hawaii.
[12][13] Vogt also built the Hamilton spectrometer at Lick Observatory (with which most of the first extrasolar planets were discovered).
[14] In 1987,[15] earlier in his career, Vogt invented the technique of "Doppler imaging" for mapping the surface features of stars.