“Digital Astrophotography, A Guide to Capturing the Cosmos” by Stefan Seip; $30 from Rocky Nook Press,

Almost everyone likes pictures of the stars and the planets. You need a telescope, of course, but once you have that, using a digital camera has big advantages.

A digital image can be manipulated in many ways, and there are lots of Astrophotographyprograms that can do it. Sharpness can be enhanced, false color images can be generated easily, and things not readily seen in a normal image can be brought out by filtering routines that separate parts of an image that may be only a single pixel apart in brightness. The book has plenty of pictures showing what can be done.


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