Active Region 1024 looks very impressive in these Hinode and SOHO images:
http://www.lmsal.com/solarsoft/latest_events/XRT_Ti_poly_20090707_175733_1024.png
http://www.lmsal.com/solarsoft/latest_events/eitp_304_20090708_1317_1024_1024.png
Hinode is a Solar Observatory of the National Astronomical Observatory of Japan NAOJ.
The X-ray telescope of Hinode is described at:
http://solar-b.nao.ac.jp/xrt_e/
Victor Herrero