| OCR Text |
Show [ 174 J 430 ENCAMPMENT ON THE OJ.D TIED OF POWDER RTVF.R. Determination of longitude, Octobe1· 15, 1 43-altitudes ofu. LyrEP, on ERVATIONS. Flll ST S'&ll r F.S. Double nHituJos of Time of chronomrt!'f. Dou blt~ nllil uJe:; of Time of chronomci.Pr a Lynr. n Lyra'. - h. min. sec. 10 07 01.0 lt. '111 in. src. JJcg. min. ,<;{'{', 10 01 0'7. 3 90 28 20 Deg. min. scr. 92 13 10 91 50 !30 03 00.0 !JO oa 10 0 04.5 91 :30 1!) 03 f>'i".G 80 4fl 15 ()!) 00.7 91 11 00 Ot1 17'.0 80 26 40 10 00.0 90 50 25 05 51.() tl 01 00 11 05.0 Index ouor ~ + 1 min. 26 sec. RESUI.'I' OF CALCULATION. ___,.._ Moan time. AtlVUil('('. Longitude. 1t. min. .~er. II . m iu. fiN'. Dtf!;. rnm. sec. 8 58 23 l 0 OG. 0 117' 21 21 - - _________ ....__ __________ -.~... __ ENC MPME '1' ON POWDER TilVEH. Determination of longitude, Octobe1· 16, 181~3-allz'tudes of the sun. 0 B.'J.;RVA'I'IONS. Double altituo(•H of tho sun's lower limb. Time of chronometer. Dr g. min. sec. h. min. sec. 51 08 00 JO 20 45.5 54 17' 40 30 28.0 54 28 30 at 14.0 54 3"/ 40 31 52.5 M 43 30 32 20.4 Index error = + 1 min. 25 sec. RESULT OF CALCULATION Mean time. Advance. Longitude. - -- h. m,:n. sec. lt. min. .~I'. D t• rr, min. ser. b !) 23 l4 l 07' 540 117 29 22 -- 431 [ 174 ] ENCAMPMEN'r ON POWDER RIVER. 1Jete1'mz'nation of lat-itude, October 16, 1843- altitudes of Polaris. OU~EH VA'l'ION . Double altitudes of Polari~. Time of chronometer. Deg. mm. set. 01 09 20 91 10 40 91 II 00 91 11 fiO 91 13 10 h. m,n. sec. 8 05 Ofi 06 33 07' 24 08 27' 0 18 Index error=+ 1 min. 26 Roc. RE UL'r OF CALCULATION. True altitude. Mean time. Latitude. Dtg. min. sec. !t. mtn. ..~ec. Dr g. mtn. 8ec 45 35 22 6 69 38 44 59 29 Determz'nalion of longUude, October 16,1 43-allitudes of o. .flndromedcJ~. OllSERVATION • Double altitudes of a Andromcdre. Timo of chronometer. '7'· Deg. min. sec. 97 36 50 98 06 40 98 42 00 h. 8 Inuc. error = + 1 min. 26 sec. RE ULT OF CALCU LA'I'ION. Mean time. Advance. - -- min. sec. ft. min. .'ICC 10 33 1 61 55.3 - mm. 16 18 20 8f'C. 68.0 23.0 04.0 Longitude |
