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Which functional limit arises when using an astrolabe for celestial navigation at extremely high latitudes?

A)Reduced altitude measurement accuracy
B)Inability to track circumpolar stars
C)Increased atmospheric refraction errors
D)Requirement for leap-second corrections

💡 Explanation

When at high latitudes, the astrolabe's projection distorts and the altitude of circumpolar stars becomes relatively constant, so the stars no longer rise and set. Therefore tracking them becomes impossible, rather than just losing altitude accuracy because this affects every latitude, or error rates related to atmospheric refraction.

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