OCR Text |
Show ' [ 174 J 452 RECOND ENCAMPMENT ON FAJ.J. RIVER. DcteruLination of latitude, /Jecen1-ber u, 1813 altitude~ of Polari.9• OJJSE H \AT ION • Doubt a!tttudc~-, of Pol.trir-. Tunc r Chfi>IIOilWtcr. --- [)rrr, ~ lnlll. ()() 2a !)() 2H 9<• ~') !)0 2~1 go 2~} Trur nlt i tlJ.th•. Dcg. mtn. set. 45 ll\. 22 .~t·r. 0(? l'> 1 r !0 0') Indc error + 1 mm. :30 H'(' RE LT OF CALCULATIOl\. Mean time. II. nun . sec. 1 :n 25 mut. 20 sec. n1 07 ()() 011 00 LntituJ.c. Dtg. nun. sec. 4:~ 44 15 TIHRD E. CAMPMENT OK FALL RfVER. Dele minot ion of longitude, Dec. 8, 184 ~~ -i'lnmersion of ,., Gemino?'um. Obscrnd ti IIH'. h. mw. ser. 23 08 . w. IJeg. min. Mr. 121 33 50 Determination of longitude, Decembe1· 8, 1843-altitudes of Rigel. OUSERYATlON ~ . Double altitude~> of Rig ·1. Time of chronometer Deg. mtn. :u?c 70 l!J 30 69 56 30 69 43 00 69 27 40 69 lO 00 h. min. sec. l 23 26 ·= Index error = + 1 min. !l2 ~. RESULT OF CALCULATION. Advance. h. mm. sec. 0 02 37.7 ''· min. sec. 2 12 32.0 a.m .. 14 30.0 16 oo.o 17 36.5 19 36.6 Longitude. - - 453 .[ 174 ] 'l 'H1HU ENCAMPMJ·;NT 0 FALL HJV.ER .Delerminalwn of latitude, /Jecember , 18'13-altiludes of Polaris. OB 'ERVATJON . • Double altitudes of Polur ts '· Time of chronometer. lJcg. mtn. 8'/ 19 87 47 87 ~ (j 87 45 87 44 fl7 14 87 43 87 42 87 11 f!7 10 True altitude. Dcg. min. sec. 43 52 01 we. 10 :w 40 30 40 25 00 2{) 00 45 Index error =-+ J min. 32 sC~c. RESULT OF CALCULATION. Mean time. lt. min. sec. l 00 38 CAMP IN A PINE FOHE T. IL. I min. .~ec. 47 14 a.m. 49 49 50 5:l 51 51 6!-l 0 51 00 55 03 .~G 20 57 18 5~ 13 Latitude. Deg. min. :~cc. 43 30 :J(l Determination of latitude, Dece1nber 8, 1843-a/titttdes of Polaris. OB ERVATION . -- Double altitudes of Polaris. Time of chronometer. Deg. mm. sec. h. min. sec. 89 10 00 G 42 25 p.m. 8\J 11 00 13 24 89 11 45 44 1 J 89 12 30 45 12 89 12 30 46 07 89 t:-3 10 47 14 89 13 15 48 23 89 13 40 49 21 9 13 50 50 02 89 14 30 50 46 Index error ..... + 1 min. 32 sec. -- RESULT OJo' CALCULATION. True altituue. Mean time. Latitude. - - Deg. min. ser. h. min. sec. De g. min. sDtJ. . 44 36 05 5, 53 57 43 17 49 |