A Complete Epitome of Practical Navigation ...

LOGARITHMS for finding the Correction to reduce the Moon's Declination or Right Ascension to any Time under the Meridian of Greenwich.

MINUTES OF AN HƠUR OR A DEGREE.

Sec.

33446o to▸

48 49 50 51 52 53 54 55 56 57 58 59 0969 0880 0792 0706 0621 0539 0458 0378 0300 0223 0147 0073 0 0968 0878 0790 0704 0620 0537 0456 0377 0298 0221 0146 0072 0966 0877 0789 07030619 0536 0455 0375 0297 0220 0145 0071| 0965 0875 0787 0702 0617 0535 0454 0374 0296 0219] 6143 0069 0963 0874 0786 0700 0616 0533 0452 0373 0294 0218 0142 0068 0962 0872 0785 0699 0615 0532 0451 0371 0293 0216 0141 0067 0960 0871 0783 0697 0613 0531 0450 0370 0292 0215 0140 0066) 0959 0869 0782 0696 0612 0529 0448 0369 0291 0214] 0139] 0064| 0957 0868 0780 0694 0610 0528 0447 0367 0289 0213 0137 0063| 0956 0866 0779 0693 0609 0526 0446 0366 0288 0211 0136 0062 0954 0865 0777 0692 0608 0525 0444 0365 0287 0210 0135 0061] 11 0953 0863 0776 0690 0606 0524 0443] 0363 0285 0209 0134 0060| 0951 0862 0774 0689 0605 0522 0442 0362 0284 0208 0132 0058 12 0950 0860 0773 0687 0603 0521 0440 0361 0283 0206 0131 0057 13 0948 0859 0772 0686 0602 0520 0439 0359 0282 0205 0130 0056 14 0947 0857 0770 0685 0601 0518 0438 0358 0280 0204] 0129 0055]| 15 0945 0856 0769 0683 0599 0517 0436 0357 0279 0202 0127 0053 16 0944 0855 0767 0682 0598 0516 0435 0356 0278 0201 0126 0052 17 0942 0853 0766 0680 0596 0514 0434 0354 0276 0200 0125 0051| 18 0941 0852 0764 0679 0595 0513 0432 0353 0275 0199 0124 0050 0939 0850 0763 0678 0594 0512 0431 0352 0274 0197 0122 0049 20

0938 0849 0762 0676 0592 0510 0430 0350 0273 0196 0121 0047 0936 0847 0760 0675 0591 0509 0428 0349 0271 0195 0120| 0046] 22 0935 0846 0759 0673 0590 0507 0427 0348 0270 0194 0119 0045] 23 0933 0844 0757 0672 0588 0506 0426 0346 0269 0192 0117 0044] 0932 0843 0756 0670 0587 0505 0424 0345 0267 0191 0116 0042 25 0930 0841 0754 0669 0585 0503 0423 0344 0266 0190 0115 0041 26 27 0929 0840 0753 0668 0584 0502 0422 0342 0265 0189 0114 0040 27 28 0927 0838 0751 0666 0583 0501 0420 0341 0264 0187 0112 0039 28 29 0926 0837 0750 0665 0581 0499 0419 0340 0262 0186 0111 0038 29 30 0924 0835 0749 0663 0580 0498 0418 0339 0261 0185 0110 0036 30 31 0923 0834 0747 0662 0579 0497 0416 0337 0260 0184 0109 0035 31 32 0921 0833 0746 0661 0577 0495 0415 0336 0258 0182 0107 0034 32 33 0920 0831 0744 0659 0576 0494 0414 0335 0257 0181 0106 0033 33 34 0918 0830 0743 0658 0574 0493 0412 0333 0256 0180 0105 0031 34 35 0917 0828 0741 0656 0573 0491 0411 0332 0255 0179 0104 0030 35 36 0915 0827 0740 0655 0572 0490 0410 0331 0253 0177 0103 0029 36 37 0914 0825 0739 0654 0570 0489 0408 0329 0252 0176 0101 0028 37 0912 0824 0737 0652 0569 0487 0407 0328 0251 0175 0100 0027 38 39 0911 0822 0736 0651 0568 0486 0406 0327 0250 0174 0099| 0025| 39 40 0909 0821 0734 0649 0566 0484 0404 0326 0248 0172 0098 0024 40 41 0908 0819 0733 0648 0565 0483 0403 0324 0247 0171 0096 0023 41 42 0906 0818 0731 0647 0563 0482 0402 0323 0246 0170 0095 0022 42 43 0905 0816 0730 0645 0562 0480 0400 0322 0244 0169 0094 00211 43 0903 0815 0729 0644 0561 0479 0399 0320 0243 0167 0093 0019 44 0902 0814 0727 0642 0559 0478 0398 0319 0242 0166 0091 0018 45 0900 0812 0726 0641 0558 0476 0396 0318 0241 0165 0090 0017 46 0899 0811 0724 0640 0557 0475 0395 0316 0239 0163 0089 0016 47 0897 0809 0723 0638 0555 0474 0394 0315 0238 0162 0088 0015 48 0896 0808 0721 0637 0554 0472 0392 0314 0237 0161 0087 0013 49 0894 0806 0720 0635 0552 0471 0391 0313 0235 0160 0085 0012 50

51 0893 0805 0719 0634 0551 0470 0390 0311 0234 0158 0084 0011 51 52 0891 0803 0717 0633 0550 0468 0388 0310 0233 0157 0083 0010 52 53 0890 0802 0716 0631 0548 0467 0387 0309 0232 0156 0082 0008 53 54 0888 0801 0714 0630 0547 0466 0386 0307 0230 0155 0080 0007 54 55 0887 0799 0713 0628 0546 0464 0384 0306 0229 0153 0079 0006 55 56 0885 0798 0711 0627 0544 0463 0383 0305 0228 0152 0078 0005 56 57 0884 0796 0710 0626 0543 0462 0382 0304 0227 0151 0077 0004 57 58 0883 0795 0709 0624 0541 0460 0381 0302 0225 0150 0075 0002 58 59 0881 0793 0707 0623 0540 0459 0379 0301 0224 0148 0074 0001 59

Planet's App. Alt.

The Parallax in Altitude for Planets.

Planet's Horizontal Parallax.

9 11 13 15

9" 11" 13" 15" 17" 19" 21" 23" 25" 27 "29"31"33
9" 11" 13" 15" 17" 19" 21" 23" 25" 27" 29" 31" 33"
9 11 13 15 17 19 21 23 25 27 29 31 33
9 11 13 15 17 19 21 23 25 27 29 31 33
19 21 23 25 27 29 31 33
19 21 23 25 27 29 31 33
19 21 23 25 27 29 31 33
19 21 23 25 27 29 31 33

Planet's App. Alt.

To correct the Logarithmic Difference when a Planet is observed.

Planet's

Planet's Horizontal Parallax.

Planet's

App. Alt.

1" 3" 5" 7" 9"11"13"15" 17" 19" 21 "23" 25" 27 "29"31"33" App. Alt. 30 27 28 28 28 28 28 29 29 29 29 29 30 30 30 30 30 31 30

18 18 19 19 19 19 20 20 20 21 21 21 21 22 22 22 23
12 13 13 14 14 14 15 15 15 16 16 17 17 17 17 18 18

9 10 10 10

655678

11 11 12 12 13 13 13 14 14 15 15 16 16 9 10 10 11 11 12 12 13 13 14 14 15 15 15

8 8 9 10 10 11 11 12 12 13 14 14 15 15

3222222222

7 8 9

9 10 12 13 14 16 18 20 21 22 23 25 8 10 11 13 14 16 18 20 22 23 25 26 28 7 9 11 13 14 16 17 20 21 24 25 28 29 31 9 12 14 15 17 19 22 23 26 27 31 32 34 8 10 13 15 17 19 21 24 25 28 30 34 35 37 9 11 14 17 19 21 23 26 28 31 33 37 38 42

32 35

7 9 12 15 18 21 23 26 28 31 34 37 40 42 46 7 10 13 17 19 23 25 28 31 34 37 40 43 46 50 8 11 14 18 21 24 27 31 34 37 40 43 46 50 54 9 12 15 19 22 26 29 33 36 40 43 46 49 54 57 9 13 16 20 23 27 31 35 38 42 46 49 52 57 60 10 13 17 21 24 29 32 36 40 44 48 51 55 59 63 6 10 14 18 22 25 30 33 38 42 46 49 53 57 61 65 6 10 14 18 22 26 30 34 39 43 47 50 55 59 63 67 6 10 14 19 23 27 31 35 39 44 48 51 56 60 64 68 6 10 15 19 23 27 31 36 40 44 48 52 57 61 65 69 26 10 15 19 23 27 31 36 40 44 48 52 57 61 65 69

To correct the Auxiliary Angle when a Planet is observed.-Additive. Planet's Horizontal Parallax.

Planet's App. Alt.

Planet's 1′′ 3′′ 5′′ 7′′ 9′′|11′′|13′′|15′′ 17′′|19′′ |21′′|23′′′ 25′′ 27′′ 29′′ 31′′ 33′′ App. Alt 3o 8" 8" 8" 8" 8" 8" 8" 8" 8" 8" 8" 8" 8" 8" 8" 8" 8" 3° 5 5 5 6 6 6 6 6 6 6

5 5

7 667 67

54322221–

54322

5432211

456789:

[ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small]

8 8

9 10 11

8 8 9 10 11 11 12 9 9 10 11 12 13 14 9 10 11 12 13 14 15 9 10 11 12 13 14 15 16 9 10 12 13 14 14 16 17 9 10 11 12 13 14 15 16 17 9 10 11 12 13 15 16 17 18 9 10 12 13 14 15 16 17 18

To reduce the EQUATION OF TIME to any Time under the

Time. 1s 28 4s 6s

0 30 1 0

1 30

4 30 5 0 5 30 6 0

Meridian of Greenwich.

DAILY VARIATION.

h. m. 8 0.0 0. 0.1 0.1 0.2 0.2 0.3 0.3 0.3 0.4 0.4 0.5 0.5 0.5 0.6 0.6 0.0 0.1 0.2 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.8 0.9 1.0 1.1 1.2 1.2 0.1 0.1 0.2 0.4 0.5 0.6 0.8 0.9 1.0 1.1 1.3 1.4 1.5 1.6 1.7 1.8 2 0 0.1 0.2 0.3 0.5 0.7 0.8 1.0 1.2 1.3 1.5 1.7 1.8 2.0 2.2 2.3 2.5 2 30 0.1 0.2 0.4 0.6 0.8 1.0 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9 3.1 30 0.1 0.3 0.5 0.7 1.0 1.2 1.5 1.8 2.0 2.2 2.5 2.7 3.0 3.2 3.5 3.7 3 30 0.1 0.3 0.6 0.9 1.2 1.5 1.8 2.0 2.3 2.6 2.9 3.2 3.5 3.7 4.1 4.4 4 0 0.2 0.3 0.7 1.0 1.3 1.7 2.0 2.3 2.6 3.0 3.3 3.7 4.0 4.3 4.7 5.0 0.2 0.4 0.7 1.1 1.5 1.9 2.3 2.6 3.0 3.4 3.7 4.1 4.5 4.9 5.2 5.6 0.2 0.4 0.8 1.2 1.7 2.1 2.5 2.9 3.3 3.8 4.2 4.6 5.0 5.4 5.8 6.2 0.2 0.5 0.9 1.4 1.8 2.3 2.8 3.2 3.7 4.1 4.6 5.0 5.5 5.9 6.4 6.8 0.2 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 0.3 0.5 1.1 1.6 2.2 2.7 3.3 3.8 4.3 4.9 5.4 5.9 6.5 7.0 7.6 8.1 0.3 0.6 1.2 1.7 2.3 2.9 3.5 4.1 4.7 5.2 5.8 6.4 7.0 7.5 8.1 8.7 0.3 0.6 1.2 1.9 2.5 3.1 3.8 4.4 5.0 5.6 6.3 6.9 7.5 8.1 8.7 9.4 0.3 0.7 1.3 2.0 2.7 3.3 4.0 4.7 5.3 6.0 6.7 7.3 8.0 8.6, 9.3 10.0 0.4 0.7 1.4 2.1 2.8 3.5 4.3 5.0 5.7 6.4 7.1 7.8 8.5 9.2 9.9.10.6 0.4 0.7 1.5 2.2 3.0 3.7 4.5 5.2 6.0 6.8 7.5 8.2 9.0 9.7 10. 4'11. 2 0.4 0.8 1.6 2.4 3.2 4.0 4.8 5.5 6.3 7.1 7.9 8.7 9.5 10.211.0 11.8 10 0 0.4 0.8 1.7 2.5 3.3 4.2 5.0 5.8 6.7 7.5 8.3 9.210.0 10.8 11.6 12.5 10 30 0.4 0.9 1.7 2.6 3.5 4.4 5.3 6.1 7.0 7.9 8.7 9.610.5 11.4 12. 213. 1 11 0 0.5 0.9 1.8 2.7 3.7 4.6 5.5 6.4 7.3 8.2 9.210.011. 011.9 12.8 13.7 11 30 0.5 1.0 1.9 2.9 3.8 4.8 5.8 6.7 7.7 8.6 9.610.5 11.5 12.4 13. 4 14.4

630

7 0 7 30 8 0 8 30 90 9.30

For converting Foreign Measures into English feet or fathoms,

English French French Spanish fathoms toises. brasses. brazas.

guese

Swedish
fathoms

Vene

tiau

3.76 4.50 4.32 3.71

3.33

braças. 0.94 1.13 1.08 0.93 0.83 1.0S 0.97 1.03 1.88 2.25 2.16 1.85 1.67 2.15 1.94 2.05 1.75 2.111 1.75 2.82 3.38 3.24 2.78 2.50 3.23 2.92 3.08 2.63 3.16 2.62 3.51 4.21

passi.

0.88 1.05 0.87

4.31 3.89

4.11

3.49

9.39 11.26 10.79

9.27

8.33 10.77

9 71 10.27

8.77 10.52 8.73 10.33 12.39 11.87 10.20 9.17 11.85 10.69 11.30 9.65 11.58 9.60 11.27 13.51 12.95 11.12 10.00 12.93 11.66 12.33; 10.53 12.63 10.47 12.21 14.64 14.03 12.05 10.83 14.00 12.63 13.36 11.40 13.68 11.35 13.15 15.76 15.11 12.97 11.67 15.08 13.60 14.38 12.28 14.74 12.22 14.09 16.89 16.19 13.90 12.50 16.16 14.58 15.41 13.16 15.79 13.09 15.02 18.02 17.27 14.83 13.33 17.24 15.55 16.44 14.04 16.84 13.96 15 96 19.14 18.35 15.75 14.17 18.31 16.52 17.46 14.91 17.89 14.83 16.90 20.27 19.43 16.68 15.00 19.39 17.49 18.49 15.79 18.95 15.70 17.84 21.39 20.51 17.61 15.84 20.47 18.46 19,52 16.67 20.00 16.58 18.78 22.52 21.58 18.54 16.67 21.54 19.43 20.55 17.54 21.05 17.45

19.72 23.64 22.66 19.46 17.50 22.62 20.40 21.57 18.42 22.11 18.33 20.66 24.77 23.74 20.39 18.33 23.69 21.37 22.59 19 30 23.16 19.20 21.60 25.90 24.82 21.31 19.17 21.77 22.34 23.62 20.18 24.21 20.07 22.54 27.02 25.90 22 24 20.00 25.85 23.31 21.65 21.05 25.26 20.94 25 23.47 28.15 26.98 23.17 20.83 26.93 24.29 25.68 21.93 26.32 21 82 26 24.41 29.27 28.05 24.09 21.67 28.00 25.26 26.70 22.81 27.37 22.69 27 25.35 30.40 29.13 25.02 22.50 29.08 26.23 27.73 23.69 28.42 23.56 28 26.29 31.53 30.21 25.95 23.33 30.16 27.20 28.76 24.57 29.47 24.44 29 27.23 32.66 31.29 26.87 24.17 31.23 28.17 29.78 25.44 30.52 25.31 30 28.17 33.78 32.37 27.80 25.00 32.31 29.14 30.81 26 32 31.58 26 15 31 29.11 34.90 33.45 28.73 25.83 33.39 30.11 31.84 27.19 32.63 27.05 32 30.05 36.03 34.53 29.65 26.67 34.47 31.08 32.86 28.07 33.68 27.93 33 30.99 37.15 35.61 30.58 27.50 35.51 32.06 33.89 28.95 34.74 28.80 34 31.93 38.28 36.69 31.51 28.33 36.62 33 03 34 92 29.82 35.79 29.67 35 32.87 39.40 37.77 32.43, 29.17 37.69 34.00 35.95 30.70 36.84 30.54 36 33.80 40.53 38.84 33.36 30.00 38.77 34.97 36.97 31.58 37 89 31.42 37 34.74 41.65 39.92 34.29 30.84 39.85 35.94 38.00 32.46 38.95 32.29 38 35.68 42.78 41.00 35.21 31 67 40.93 36.92 39.03 33.33 40.00 33.16 39 36.62 43.90 42.08 36.14 32.50 42.00 37.89 40.05 34.21 41.05 34 04 40 37.56 45.03 43.16 37.07 33.33 43.08 38.86 41.08 35.09 42.11 34.91 38.50 46.16 44.24 37.99 34.17 44.16 39.83 42.11 35.97 43.16 35.78 39.44 47.29 45.32 38.92 35.00 45.24 40.80 43.14 36 84 44.21 36.65 40.38 48.42 46.40 39.84 35.83 46.31 41.77, 44.16 37.72 45.26 37.53 44 41.32 49.54 47.48 40.77 36.67 47.39 42.75 45.19 38.60 46.32 38.40 45 42.26 50.67 48.55 41.70 37.50 48.47 43.71 46.22 39.47 47.37 39.27 46 43.19 51.79 49.63 42.63 38.33 49.54 44.69 47.25 40.35 48.42 40.14 47 44.13 52.92 50.71 43.55 39.17 50.62 45.66 48.27 41.23 49.47 41.02 45.07 54.05 51.79 44.48 40.00 51.69 46.63 49,30 42.11 50.52 41.89 46.01 55.17 52.87 45.41 40.83 52.77 47.60 50.33 42.98 51.58 42.76 50 46.95 56.30 53.95 46.34 41.67 53.85 48.58 51.36 43 86 52 63 43.64

47.89 57.43 55.03 47.26 42.50 54.93 49.55 52,38 44.74 53.68 44.51 48.83 58.55 56.11 48.19 43.33 56.00 50.52 53.41 45.61) 54.74 45.35 49.77 59.68 57.19 49.12 44.17 57.08 51.49 54,44 46.49 55.79 46.25 54 50.71 60.81 58.27 50.04 45.00 58.16 52.46 55,46 47.37 56.84 47.13 55 51.65 61.93 59.35 50.97 45.83 59.24 53.43 56.49 48.25 57,89 48.00 52 58 63.06 60.43 51.90 46.67 60.31 54.40 57,52 49.12 58.95 48.87 53.52 64.19 61.51 52.82 47.50 61.39 55.37 58.55 50.00) 60.00) 49.75 58 54.46 65.31 62.58 53.75 48.33 62.47 56.34 59.57 50.88 61.05 50.62 59 55.40 66.44 63.66 54.68 49.17 63.54 57.31 60.59 51.75 62.11 51.49

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