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figure 23
The display of the data you get looks like the figure above. You can pick from the blue lines the stars that best fit your direction of flight, and the normal to it. This is a whole lot easier than using the Air Almanac, even if we had one to use. For the selected Object, the columns of interest are Hc for the angle above the local horizon, and Zn, the direction east of true north.
The web site has information on what the Altitude Corrections are, and how to apply them. These Corrections are generally much smaller than the intrinsic error in the jittery environment of a fast moving aircraft, and may be ignored.
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