Great Photography Sites:
David Rosenthal - great astrophotography by David Rosenthal
imagery by Eric - great astrophotography and superb infrared photography by Eric Chesak
ASTRONOMERS DO IT IN THE DARK - great astrophotography by Scott Rosen
Mose Mathis Fine Art - beautiful color and B&W photography by Mose Mathis
Ginger's Postcards from Earth and Beyond - wonderful landscape photography of both day and night skies, scenics and nature
Astrophoto Gallery - a huge variety of astrophotos, by group members, of all things astro
Bill Snyder Astrophotography - great astrophotography by Bill Snyder
kimball's astro-photography pages - great astrophotography using a DSLR by Chuck Kimball
Equipment & Software
Books, Tutorials & Other Helpful Links
Photoshop Astronomy (paperback) by R. Scott Ireland
IP4AP (Image Processing for Astrophotography) - great tutorials for Photoshop & PixInsight
Catching the Light - Astrophotography by Jerry Lodriguss - "a web site of astronomical photographs, tips and techniques for digital DSLR astrophotography, and image processing in Photoshop"
E-Z CCD DVD - astronomical image processing video lectures by Tony Hallas
Amateur Astronomy Magazine - "News For, By and About Amateur Astronomers Around the World"