altazimuth mount
two-axis mount for supporting and rotating an instrument such as a telescope about two perpendicular axes – one vertical and the other horizontal
en-GB/æltæzɪməθ ˈmaʊnt/
en-US/ælˈtæzəməθ ˈmaʊnt/
two-axis mount for supporting and rotating an instrument such as a telescope about two perpendicular axes – one vertical and the other horizontal