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← HistoryWhich outcome arises when sighting through a medieval Islamic astrolabe aimed far from zenith?
A)Increased atmospheric refraction error✓
B)Reduced parallax error for planets
C)Enhanced stellar aberration measurement
D)Diminished instrument machining imperfection impact
💡 Explanation
When sighting far from the zenith, the light travels through more of the atmosphere causing increased refraction because the angle of incidence on the atmospheric layers becomes greater. Therefore, atmospheric refraction error increases, rather than parallax reduction, aberration enhancement, or machining impact diminishing, which depend on other conditions.
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