Astrophotography sites
A Shot in the Dark by Kirk M. Rogers
Astronomical Ruckus Effect (Tak equipment user)
Astrophotography by Jeff Ball
Astrophotography by Robert Gendler
Starry Nights Astrophography Page by Steve Walters, Steve has a great SCT Collimation procedure.
Astrophotography by Warren Keller
Astrophotography by Jerry Lodriguss
Astronomical & Nightscape Photography by Chris Cook

Equipment Review sites
Cloudy Nights Telescope Reviews
Astro-Product Reviews by Todd Gross
Scopereviews.com by Ed Ting
Ken's Eyepiece corner

Information sites
Astrophotography Mailing List (APML) Great resource for astrophotography information.
International Dark-Sky Association
New Mexico Skies
The Messier Catalog
Deep Sky Objects
Cherry Springs State Park "Stargazer's Paradise"
Photoshop for Astrophotographers