Question 810Navigation General70% to pass
What causes the error of collimation with regards to the four adjustments to a sextant?
AI Explanation
The correct answer is D) The telescope not parallel to the frame.
The error of collimation in a sextant is caused by the telescope not being parallel to the frame of the sextant. This means that the line of sight through the telescope is not aligned with the plane of the frame, leading to inaccurate angle measurements.
The other options are incorrect because they do not directly cause the error of collimation. Option A refers to the perpendicularity of the frame and index mirror, which affects the index error. Option B refers to personal error, which is not a physical adjustment of the sextant. Option C refers to the perpendicularity of the frame and horizon glass, which affects the horizon mirror.
Related Questions
#808 Cyclones tend to move _______________.#809 Which of these sextant errors is nonadjustable? #811 The horizon glass of a sextant is _______________.#812 There are seven sources of error in the marine sextant. Of the four errors listed, which one is adjustable? #813 For a well made and well maintained sextant, the maximum value of which correction is usually so small that it can be ignored?