Yohkoh is a Japan/US/UK mission aiming for the study of high-energy solar physics. Its scientific operations were conducted since early September-1991 until 14-December-2001, while its orbital life was from 31-August-1991 to 12-September-2005. Yohkoh was named after the Japanese word meaning 'sunshine'.

Yohkoh scientific instrumentation included a Hard X-ray Telescope (HXT), a Soft X-ray Telescope (SXT), a Bragg Crystal Spectrometer (BCS), and a Wide-Band Spectrometer (WBS). These instruments are described in a series of papers in Solar Physics, vol. 136 (1991). First results have been published in Publ. Astron. Soc. Japan, vol 44 (1992). A bibliography of Yohkoh-related publications may be found at http://www.lmsal.com/~aschwand/publications/yohkoh.html.

For more information about Yohkoh mission, spacecraft, and instruments, we have several versions of documents, including some external links. Hope you find the article that best meets your needs.