Yohkoh Legacy data Archive
Welcome to our website! The Yohkoh Legacy data Archive (YLA) is intended
to provide all usable scientific data obtained with the
in convenient forms for research and education.
The YLA consists of the whole set of Yohkoh data (from raw data to highly
processed catalogs), with the web services of quick look, data search,
and a sufficient amount of explanatory materials.
Here is our Data Policy.
The YLA has been one of the resident archives(RAs) supported by NASA's
Heliophysics Data Environment Enhancements program since 2009 through
2015. Our six year of achievements as an RA are summarized
The YLA web site continues to be active as a primary source of
Yohkoh products. Our user support will be depending on the availabity of
Here is the entrance.
Extended X-ray corona on 8-May-1992.
Click image to enlarge.