On 13 September your 1830 ZT DR position was LAT 23°03'S, LONG 105°16'E when you observed a faint unidentifiable star through a hole in the clouds. The star bore 351.5°T at a sextant altitude (hs) of 62°05.6'. The chronometer read 11h 24m 39s and is 5m 08s slow. The index error is 1.0' off the arc, and the height of eye is 52 feet. What star did you observe?

Correct Answer: Option A — Beta Ophiuchi

Correct hs for index error, dip, and refraction to find Ho. Determine GMT and LHA. Using the sight reduction tables, calculate the intercept and azimuth. The calculated position and bearing align with the coordinates for Beta Ophiuchi, confirming the star identification through standard celestial navigation reduction procedures.