AMPLITUDES AT THEBES. ─────────┬──────────┬────────┬─────────┬────────┬────────── Declin │ Ampli │ Declin │ Ampli │ Declin │ Ampli -ation. │ -tude. │ -ation.│ -tude. │ -ation.│ -tude. ─────────┼──────────┼────────┼─────────┼────────┼────────── ° │ ° ′ │ ° │ ° ′ │ ° │ ° ′ 0 │ 0 0 │ 22 │ 24 33 │ 44 │ 50 25 1 │ 1 7 │ 23 │ 25 41 │ 45 │ 51 41 2 │ 2 13 │ 24 │ 26 49 │ 46 │ 52 57 3 │ 3 20 │ 25 │ 27 58 │ 47 │ 54 14 4 │ 4 26 │ 26 │ 29 6 │ 48 │ 55 32 5 │ 5 33 │ 27 │ 30 15 │ 49 │ 56 51 6 │ 6 40 │ 28 │ 31 23 │ 50 │ 58 12 7 │ 7 47 │ 29 │ 32 32 │ 51 │ 59 34 8 │ 8 53 │ 30 │ 33 41 │ 52 │ 60 58 9 │ 9 59 │ 31 │ 34 51 │ 53 │ 62 23 10 │ 11 6 │ 32 │ 36 1 │ 54 │ 63 51 11 │ 12 13 │ 33 │ 37 11 │ 55 │ 65 21 12 │ 13 20 │ 34 │ 38 21 │ 56 │ 66 54 13 │ 14 27 │ 35 │ 39 31 │ 57 │ 68 31 14 │ 15 34 │ 36 │ 40 42 │ 58 │ 70 12 15 │ 16 41 │ 37 │ 41 53 │ 59 │ 71 59 16 │ 17 49 │ 38 │ 43 5 │ 60 │ 73 55 17 │ 18 56 │ 39 │ 44 17 │ 61 │ 76 1 18 │ 20 3 │ 40 │ 45 30 │ 62 │ 78 25 19 │ 21 10 │ 41 │ 46 43 │ 63 │ 81 19 20 │ 22 17 │ 42 │ 47 56 │ 64 │ 85 42 21 │ 23 25 │ 43 │ 49 10 │ │ ─────────┴──────────┴────────┴─────────┴────────┴────────── The absolute connection, then, between the declination of a heavenly body and the amplitude at which it rises and sets is obvious from the above table: given the declination we know the amplitude; given the amplitude we know the declination. Suppose we were dealing with a sea horizon: all the bodies rising or setting at the same instant of time would be in a great circle round the heavens, for the plane of the sensible horizon is parallel to the geocentric one.
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