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I was setting up my iOptron on the the back lawn nightly doing narrowband with a QSI683 and a 135mm Zeiss lens and longer lenses.
I found the Polemaster great for quick polar alignment. Once Sigma Octans and the neighbouring stars are in the field it is easy and quick. For that reason positioning some permanent markers in the lawn which the tripod legs sat on. This was accurate enough to get the stars in the Polemaster field of view each night.
It takes a little practice but after a few polar alignments the process become considerably quicker.
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