Drift error
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Tech note: Polar alignment with CCD drift method
last update: August 8 2K8
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M101 after 300s exposure
A 300s raw exposure of M101 show how my mount is off polar axis, LX200 14" and STL11K

Since my observatory is operational and my LX200GPS 14" is roughly polar align,
I searched the best and accurate method to make a precise polar alignment.
I look for this subject on Internet and mostly find articles about the drift method with an illuminated reticle eyepiece, but for me it will be possible to do a better job with a CCD camera.
Finally I found an interesting article about the CCD drift method. The interesting thing here, is you don't need to use a dedicated software plus you don't need see the Celestial pole and Polaris.
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