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Show [ 174 ] ~ECONl> gJ\"C ·\MPMr·:NT ON I·~LK Tn; D Rf\gR. Dete?'JJI ina 1 iou of /ongituriP, June ll. 1 'I 1- a// iturlcs (!! o. C,ygni. 0 USE ll VAT ION ·• - - Douhlc allitudeH of (! Cyu;ui. Dtg. 1)/ Ill. f>7 21 f>7 5l !18 13 scr. 10 111 00 Dud ohservutionR. Thennotnetrr 53°. [nd<'X rrror + 6 t'l<'c. Tintt' of duononwtor. h. min. sec. 7 :12 :31.0 :l4 08.0 :35 17.G HESU LT 0 I•' 'A LCTJ J.A'l'J ON. M"an time. ltctarJ. Lougituuo. --------'- II . m w . scr. h. min . sec. 9 23 4 (j L 19 17.1 ENCAMPMENT IN THE VALLI~Y Of" '1'1£1·~ NOitTll £o'OHK Ol·' Tll.E PLATTE, AT 'I'IIE J.<'OO'l' OF' TlH~ MO N'f'ALN ·. Deterrn1·1wtion of Latitude, Ju,nc 13, l814-altitudes of Polar·is. Double allitu<lcs of Polaris. Time of <"hrouomctcr. Del{. min. 79 fiG 79 57 79 1\ 7!.1 59 79 59 79 59 80 00 60 00 80 01 80 Ol True altituue. DeK. win. 39 !iS ~ ec. 3G sec. 10 40 lO 00 15 10 35 16 15 :w I udex <'rror + 10 sec. h. miu . .~t·r. 7 :31 116 ~3 02 31 16 :JG 08 37 25 38 ;H 40 06 41 12 42 18 t13 25 ItT.;SULT OP CA LCULA'l'JON. !t. 9 Man time. mm. 29 ser. 10 Latitudr. Dr~. will. .~ec . 41 IH 4 - [ 174 J t~NCAMPMBN'f TN THE VAT.LF.Y OF TlTF: NORTH FORK OF THF. PLATTE, AT Ilt' TIH; f"OOT OF TJig MOUNTAIN .. Deter min at iun of longitude, .June 13, 1 4 4-rt! t i!udes of a. .llq uil.:TJ ODSE KVATlON .. - - Douhlo altitude:~ of" Aquilre. Tilllc of chrouomt•h•r. JJe~. ?II HI. ,'?rr. !t. miu. sec. 43 33 50 7 47 56.0 44 09 40 49 3;3.6 44 37 40 50 49.5 [ndex error ,...., + 10 fi('C. RESUJ.T OF CALCULATION. M<'an time. Retard. I .ongitu<le. ft. m111. ser. lt. nun. sec. 9 40 47 1 61 2L.O Determination, of longitude, June 13, 184,1-altitudes of o. Cygni. OH ERVATIONS . Double t1ltitndes of a Cygni. /)q.;. min. ,'JCC. 68 02 40 68 26 00 68 47 10 Thrrmom<'tcr M 0 r ndcx error - + 1 0 aec Time of chronometer. h. mm. su. 7 55 22.0 56 33.0 57 40.7 RESULT OF CALt.:ULATIO!"f. Mean time. h. 9 mm. 47 ------ ,'Ire. 53 h. L Retard. min. 51 .'ICC. 2 t . 1 Longitude. |
