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| Where do you find the semidiameter correction to be used to correct sextant observations of the stars? |
| A) Table 25 in Bowditch contains the correction. |
| B) A correction of -0.5' should be applied to all star sights. |
| C) It is included in the altitude corrections inside the front cover of the Nautical Almanac. |
| D) No semidiameter correction is used. |
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