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Polar Alignment Scopes for the Advanced Series Mount

Celestron offers a polar alignment scope for installation into the bore hole of the right ascension axis - part number 94221.  Most find it very hard to install and use.  Orion makes a compatible model that is much easier to install and use - part number 7330. 

Also, you should note that if you have the Advanced Series mount with GoTo, the computerized hand control has a polar alignment routine that is generally more precise than a polar alignment scope.  Even so, some prefer the polar alignment scope so that they can quickly get an approximate polar alignment - certainly good enough for visual work with the scope.

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