The IDL standard color table No.3 has been used historically.
It is the most accepted color by the community as Yohkoh/SXT
images. However, Loren pointed out recently, that it is hard
for people with color blindness to see the structures with
this color table.
2. Initial Yellow color table
In order to increase the universal visibility, The No.3 CT
was modified by increasing the brightness of green for the
low brightness range. The red and blue arrays are kept the
same as before. This color table gives better contrast for
the faint structures. Howver, I recently noticed that
the contrast of the bright structures (e.g., AR cores) are
receded.
3, New Yellow color tables
Consideration to regain the better contrast for the
bright structures.
