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Show [ 174 ] 428 l~NCAMPMENT A'f 'I'III~ HEAD WATERS OF DURNT RIVER. Determination of latitude, October 14, 1843-altilude.v of Polaris. OBSERVATIONS. Double altitudes of Polnri~:~. 'I'imc of chronometer. Dcg. 91 91 91 91 91 91 91 91 91 91 min. 07 08 09 10 ll 11 13 13 14 15 True altitude. Deg. mm. sec. 45 35 37 sec. 10 45 50 50 20 45 10 30 40 40 lt. 9 Index error = + 1 min. 28 sec. RESULT OF CALCULATION. Mean time. lt. min. sec. 11 58 m?.n . l:l 15 17 18 19 20 21 22 23 25 sec. 21 22 03 13 13 17 47 44 41 00 Latitude. Dcg. min. ser. 44 37 34 Detennination of longitude, October 14, 1843-alliludes of a. .llquilre. OBSERVATIONS. }'IRST SERlF.S. SECOND SJ;RIES· - Double altitudes of I Time of chronometer. Double altitudes of Time of chronometer. a Aquilro. a Aquilro. n;g- 87 7 87 7 11nn. sec. 18 10 59 20 45 15 32 00 15 50 Mean time. /,. mm. sec. 8 25 46 h. 9 mtn. sec. Deg. mzn. 29 03.0 87 00 30 12.0 86 42 31 06.0 86 27 31 56.3 86 12 32 56.0 85 57 Thermometer 4 4 °. Index error -. + 1 mi~. 28 sec. RESULT OF CALCULATION. Advance. h. mm. sec. 1 07 41.9 - sec. !t. mtn. su. 15 9 33 55.4 10 35 00.5 10 35 55.2 00 36 52.0 30 37 45.0 Longitude. Dcg. min. sec 117 09 49 429 [ 174 ] ENCAMPMENT ON THE OLD BED OI•' POWDt~ R RIVEH. J)etert7lination of longitude, Ortobt·r 1 5, 1St 3-itnm,P1·sion of tlw tlJ'i1·d sa tellite of Jupil f'r -· Observed time. h. min. i 07 sec. 01 Mean I inw. J,ougituclc. II . mi n. H<'c. 5 58 04 Enze·rsion riflhe third satellite of Jupiter. Observed time. h. min. sec. 10 3\J 02 )tE ~ tJL'r OJ<' CALCUl.AT JON. Mean time. lt. mtn. sec. 9 :30 56 Longitude. Determination of latitude, October 15, 1843-a/t£/udes of Polan· . OBSERVATIONS. Double altitudes of Polaris. Time of chronometer. - · Deg. min. sec. ft. mm. .~ec. 91 36 10 9 14 19 91 3 00 16 35 91 38 50 17 57 91 39 00 19 23 91 40 10 21 34 91 42 10 22 55 91 42 40 24 43 91 14 00 25 54 91 44 10 27 09 91 45 30 29 06 ---- - Index error = + 1 min. 26 ooc. - RESULT OJo' CALCULATION. True altitude. Mean time. Latitude. Deg. min. sec. h. min. su.. Deg. min. sec. 45 50 18 8 13 51 44. 50 32 --- ---- |
