The angle of a fixed dish is in the mounting hardware. Nimiq 1 being at 91 degrees, it's almost straight; -1.2 where I am. The mount doesn't just move left to right, in adjusts in an arc that uses the requisite angle.
I can't find a link that shows it well. The dish will be rotated on the fixed mount. Here'show to calculate the angle:
http://sadoun.com/Sat/Installation/S...ion-Angles.htm