Photoshop® Basics: The Standard Curve
This chapter covers the heart and soul of image processing for just about any astronomical image. You will learn how to apply the principles of the Zone System using Photoshop® CS (or later). Other image processing programs, such as Picture Window Pro and Paint Shop Pro, include similar tools but the Levels and Curves tools in Photoshop® are powerful and fluid. Photoshop® CS adds a critically important feature: the ability to use layers and other tools with 16-bit images. Since 16-bit images contain up to 256 times as much information as 8-bit images, this is a very important feature for CCD image processing.
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