The Yohkoh Archive

All Yohkoh data now available online

In conjunction with the announcement (see below) of public availability of all Yohkoh data, the SDAC is making all Yohkohscience data available online.

Although we hope to have a better interface soon, and allow direct access to the ephemeris and other files that allow calibrating these data, for now you can browse:

Ftp access to the same data can also be had via:

Data from recent weeks will be added as they become available.
The agreement under which all Yohkoh data are available at the SDAC is available online.


Yohkoh data should now be downloaded directly. See above.

Daily SXT full-field images in FITS format, starting with 1993 January 1, can be accessed here via anonymous ftp.

Yohkoh SXT movies from the daily FITS format images are now available directly via the Web.

Up-to-date movies are avilable as well.


New users can now find an introduction to the analysis of Yohkoh data.

Thanks to Andy Phillips, Pam Spence, and Rob Bentley of the Yohkoh Archive Centre at MSSL (UK), current versions of the Yohkoh Analysis Guide (YAG) are available in hypertext form, as:

Return to the SDAC home page

Web curator: Joseph B. Gurman
Responsible NASA official: Joseph B. Gurman, Facility Scientist, Solar Data Analysis Center
[e-mail address: gurman<at>gsfc<dot>nasa<gov>]
+1 301 286-4767

NASA Goddard Space Flight Center
Solar Physics Branch / Code 612.1
Greenbelt, MD 20771

Last revised - J.B. Gurman