WHAM formally began life at Kitt Peak National Observatory (KPNO) in November 1996, using the flat mirrors of a two axis, all-sky siderostat passing light horizontally through a 0.6 m diameter, 8.6 m focal length objective lens into a 2.5 m x 2.5 m x 6 m trailer that contained the spectrometer, that used a low noise, high efficiency CCD camera as a multichannel detector behind a pair of 15 cms diameter Fabry-Perot etalons/spectrometers. [