Question 1692Navigation General70% to pass
Apparent altitude is sextant altitude corrected for _______________.
AI Explanation
The correct answer is A) inaccuracies in the reading and reference level.
Apparent altitude is the sextant altitude corrected for inaccuracies in the reading and reference level, such as instrument errors, index error, and dip of the horizon. These corrections are necessary to obtain the true altitude of the celestial body above the horizon.
The other options are incorrect because they do not fully capture the definition of apparent altitude. Option B refers to parallax and personal error, which are separate corrections. Option C refers to visibility and magnitude, which are not directly related to the definition of apparent altitude.
Related Questions
#1690 A phase correction may be applicable to correct the sextant altitude correction of _______________.#1691 When applying a dip correction to the sighted sextant angle (hs), you always subtract the dip because you are correcting _______________.#1693 A parallax correction is NOT applied to observations of the _______________.#1694 When correcting the sextant altitude to apparent altitude you are correcting for inaccuracies in the reference level and _______________.#1695 What is the equivalent of 23 min. 20 sec. in arc units?