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← HistoryWhich consequence results when an astrolabe's alidade is severely warped?
A)Inaccurate solar altitude calculation✓
B)Unusable celestial sphere projection
C)Excessive precession calculations needed
D)Compromised alloy magnetic shielding
💡 Explanation
An off-axis alidade causes inaccurate angle measurements because parallax error skews the altitude reading; therefore, stellar positional calculations are severely impacted rather than the projection since the plates remain intact relative to the base.
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