| This image, from the soft X-ray telescope on
board Yohkoh, shows the X-ray emission of the solar corona on May 8, 1992.
The effective wavelength is about 10 A, or 1 keV, and
the resolution is about 10 arc sec. The image was made deeper and
wider by combining several images with different exposure times and
different telescope pointings. An X-ray image of this type has a total
contrast range on the order of 10^5, requiring a logarithmic compression
to bring all of its features into view simultaneously.
|
