Well rather simple.
This can be achieved by doing a two 'star' alignment of which one 'star' is the zenith. The other star can be a real star of a planet not higher than 30 degrees and not more than 30 degrees from the equator.
And you need, of course an equatorial mount and a level to point the telescope at the zenith and an inclinometer or a wedge angled at your latitude to set the polar axis to the proper elevation.
http://skysurfer.eu/eqmount.php
or here a video I made in Feb 2014 (explained in daylight but, of course, this also works even better after dark):
http://skysurfer.eu/jwplayer/video.p...1wNDo6OjYwMA==
I used this method in Bali where the pole star is too low (8 degrees) and made frames of 30 seconds with a FL of 500mm.