Quote:
Originally Posted by gb_astro
So the question is just how close to zenith can you go before you have a problem?
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Well...it's not really going to matter too much, just that it's inconvenient to point into Zenith.
Just stick to stars between 20 and 60 degrees Alt, and make sure you space the Azimuth stars at 120 degrees +. Go a little higher if you must.
Even better, do a quick TPAS run as well (6+ stars) and you'll be sweet.