OCR Text |
Show [ 174 J 546 ENCAMPMENT ON A MALL AFFLUENT TO TilE ARKANSAS. Deter'lninalion of longitude, June 2G, 1841-altitudes of a. Cygni. 0 J3 E R VA 'fl 0 N :-:. Double nltitutlcs of a Cy ~ni. Timo of chronometer. Dr~. 66 (i() WI {i7 Meun timr. lt. min . .~cc . 9 01 211 min. 13 59 I :}8 \·-·----------- -- .9('(', 15 0(\ 20 50 lt. min. Sf' C. G 57 !1:3.5 59 51.6 7 00 !il.O 01 53.4 Tlwrmomch'r :~8° . T m1cx rrror • • + 1 SN' . H.F.SU LT OJ.' <.:AJ,( 'UJ,ATION. He tim l. Longituo('. h. n1111 . sec. 2 01 2 1.6 ENCAMPMENT ON A LARGER Al"FJ.UENT TO TJTB ARKAN AS. Dete?·minat?'on of latitude, June Z , l8t1.4-altitudes of Polm·is. ommn v A'riONS. Double altitudes of Pohri~;. Time of chronometer. -- - --- - De g. rnin . sec. h. min. sec. 71 28 10 ~, 08 4R 71 29 10 10 26 74 29 10 1 1 32 74 29 20 13 00 74 30 35 14 23 74 31 4.0 lG 23 74 32 15 17 38 711 32 50 ) 8 51 31 00 20 24 74 21 33 11 34 45 ------ Index error =-: + 8 sec. RESULT OF CALCULATION. Truf altitud . Ocg. min. ·ec. 37 14 24 Mean time. lt. min. sec. 9 18 05 Latitude. /Jrg. m·in. sec. 38 23 48 547 [ 174 ] EN?AM~MENT ON A LARGER AF}~LlJENT TO THE AHKAN A. '. Determ:znatzon of longitude, June 28, 1844- altitudes of() .flquilte. Oil.'ERVA'I'IONS. --------~----------------- Double altitude~; of Timo of chronometer. DoulJlo altitude~; of <A Acfllilro. n 1\.quilrr•. Dr g. min. ser. h. min . .\'{'(', /)(g . win. Sf' f . 62 28 30 7 21 30.6 ()1 19 LO 63 01 20 ~(, 04 .3 65 28 :l5 63 22 40 '27 0 L.O (i6 00 10 63 56 30 28 26.13 66 2 ~3 35 64 23 16 29 11.4 ,, 66 53 00 Thcrmomf'tcr 1'6°. Indrx Prror .,. + 8 HN ' . HESULT OF CALCULATION. Mean time. Rctartl. !t. min. src. h. nun. sec. 9 33 15 2 02 16.9 Time of <·hrouomewr. h. mi11. .~l'f· . 7 ao 60.0 32 36.5 :33 5 .o :)5 01.0 36 21.R I .ongitudc. ENCAMPMENT AT THE .JUNU'ffON OF 'I'llfi: AHKAN AS AND FONTAINE-QUI· BOUI'l' lUV EH . Determination of latitude, June 29, 1841--altitudes of Pola?"z's. ommRVATION . Double nltit udcs of PolnriH. Timl' of chronometer. Deg. fiH?t . . cc. IJ. min. sec. 71 09 00 (j 59 06 74 09 ]f) 60 20 74 10 36 61 23 74 10 20 62 30 74 11 10 63 51 74 11 50 61 55 74 13 00 66 00 74 12 50 67 00 74 13 50 68 OG 74 14 00 69 22 ------------------------------------------ ----------------------- T ndex: error = + I 0 sec. RESULT OF CALCULATION. True altitude. Mean time. Latitude. ---- 1- ll. mm. 3f'C. Drg. 9 08 49 I 38 min. sec. 15 23 Deg. min. sec. 37 04 37 ------· ---------------------------· -' |