Here's the link to Andrews Communications - go to the Skywatcher page
http://www.andrewscom.com.au/site-section-10.htm
Or you could buy the EQ5 with synscan that dugnsuz is selling. It's a great price and has Astroboy improvements - this makes the mount smoother when it is moving so tracks better. It's the same as the HEQ5 but not as heavy.
I have the same mount and it's great. I got it because the HEQ5 is so heavy. It should hold the Celestron 130 easily.