Which effect arises when Medieval Islamic astronomers used spherical astrolabes closer to the magnetic poles?

💡 Explanation

When using astrolabes at high latitudes, the projection of the celestial sphere becomes increasingly distorted because the stereographic projection used in astrolabes introduces greater errors away from the equator, impacting altitude measurements. Therefore, stellar altitude measurement accuracy reduces, rather than increased precision, improved visibility or stability, which are unrelated to projection errors.

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