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Old 06-05-2014, 06:15 AM
SteveInNZ
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SteveInNZ is offline
 
Join Date: May 2008
Location: Auckland, NZ
Posts: 239
It seems the GP2 comes without setting circles of any kind and they are sold as part of a kit with the polar scope.
If you use your scope in the same place every time, you can find true south with a variety of methods (Google earth, solar transit, etc) and then place your mount so that it lines up with the north-south line. Then mark the positions of the tripod feet so you can just bring it out and plonk it down in the exact same position.
For the setting the azimuth of the polar axis, set the telescope so that it is parallel with the polar axis and use a tilt meter to set it to the same as your latitude. I use the one in my phone and that's plenty good enough for visual use.
You can also make up something to mount your smart phone on the scope and use an app like SkEye for Android (there may be something similar for an iThing) which has an indirect mode. You calibrate by pointing at a known object and it uses its gyros to tell you where you are pointing in RA/Dec and Alt-Az, plus all the trimmings of a planetarium.

Steve.
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