For photographing and guiding at the same time, the Orion Deluxe Off-Axis Guider is perfect. It eliminates the need for a separate guide scope, fixes tracking problems such as differential flexure and mirror shift, and reduces set up time.
The Orion StarShoot is an easy-to-use, affordable autoguider for long-exposure astrophotography. Plug it into an autoguider port on your mount and let it do the work for you. It comes with the software and cables needed to work right out of the box!
The 12.5mm Orion Illuminated Plossl Telescope Eyepiece is great for accurately aligning your computerized telescope because the LED illuminated double crossline will tell you when the star is dead center. Also use it for guiding during an exposure.
DLSR cameras are everywhere nowadays, and this book, Digital SLR Astrophotography, focuses specifically on these types of cameras and how they can be used to take beautiful images of the night sky. Includes image processing techniques.