Altitude 3571 (feet) | ||
Organization Black Hills Astronomical Society Website ggladfelter.net/BHAS/HVO.htm Unnamed Telescope 12.5" Reflector on a German Equatorial mount | ||
Hidden Valley Observatory is an astronomical observatory owned and operated by Black Hills Astronomical Society. It is located just outside Rapid City, South Dakota (USA). It is named after the road on which it was built in the 1960s.
References
Hidden Valley Observatory Wikipedia(Text) CC BY-SA