Quote:
Originally Posted by Barrykgerdes
Polar alignment sounds like the trouble. 10 arc mins in elevation is much too much. This will give quite large goto errors in some parts of the sky. particularly at high declinations.
Elevation is far more important for accuracy than most people think and the error will not show up on a simple drift alignment at the zenith. You need to do a drift at the horizons as well.
Barry
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The high
fitted RMS won't be due to polar misalignment as
the MA and ME terms will mop that up very nicely.
The polar misalignment terms have very distinctive mathematical signatures
and so the analysis typically has no problem characterizing them.