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Hi Russ,
Yes, you have your calculations correct.
11 degrees east means you subtract that from 180 degrees (south) and as it says "East" you would point the scope south and then turn it 11 degrees LEFT or east....
The way I do it is with a cheapo compass with a rotating dial which I set the compass to say 169 on the dial and then hold the compass so its pointing south, then line up the scope so it points to the arrow at 169 degrees.
Rolls, as for your altitude setting, if it is a skywatcher mount, DO NOT TRUST THIS SCALE!
I have had 2 Skywatcher mounts and both of them are horribly wrong when it comes to reading the right angle for latitude. My first EQ2 was actually at 52 degrees when the dial showed 33, and the HEQ5 pro i have now is about 10 degrees out also.
THE best way to set your latitude is to use a magnetic digital level on the scope's OTA and set it based on your GPS coordinates read from say an Iphone or other GPS where the scope is currently sitting. Otherwise, a normal protractor works well also.
Dont trust the manufacturer's scale at all, they are probably put on by myopic trainees with no sense of up/down/left/right.....
Cheers
Chris
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