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Again, make the appropriate adjustments to the polar axis to eliminate any drift. Unfortunately, the latter adjustments
interact with the prior adjustments ever so slightly. So, repeat the process again to improve the accuracy checking both axes
for minimal drift. Once the drift has been eliminated, the telescope is very accurately aligned. You can now do prime focus
deep-sky astrophotography for long periods.
NOTE: If the eastern horizon is blocked, you may choose a star near the western horizon, but you must reverse the polar
high/low error directions. Also, if using this method in the southern hemisphere, the direction of drift is reversed
for both R.A. and DEC.
