Image Tools Window
The Image Tools window is divided into three tabs: Colors, Cut Levels and Information.
Colors
This tool allows you to manipulate the scaling, color table, and
intensity of the current image. By default, the image is
displayed using a standard black and white linear mode.
Cut Levels
This tool allows you to specify the
lower and upper thresholds for the color model. Simply drag the yellow
triangles on the slider to modify the thresholds. Or you can
choose one of the "Auto Set" cut levels.
Information
Image Information displays a summary of information about the current image
from the header of the FITS file.