Which optical consequence results when an astrolabe’s alidade is misaligned with its sighting pinholes?

💡 Explanation

When the alidade is misaligned, parallax error occurs because the observed star positions shift relative to the true position due to the displaced line of sight. Therefore parallax error results, rather than chromatic aberration (requires lenses), brightness reduction (related to coatings), or azimuth distortion (related to engraving).

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