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Show [ 174 J 460 [t;NCA 1\'lPMEN'I . :::IUMMEH LAKE. Determuw/1011 of lon~iturJe. Dl!Ccmbf>r l G, 1En3-altitudrs of a LyrC~J. On ERVATJON '. Donbk altitudcH of a Lym. Time of chronometer. nt•g. mill. ,.;cc. G7 50 20 h. rmn. .C~ec. 6 42 08.5 G7 0 50 44 11.0 66 27 3') 4G 11.5 Jnuex <'rror - + 1 min. 35 sec. llESULT OF CALCULATION. Mean time. Advancr. Longitude. h. mzn. u . l!. min. sec. [l 69 59 0 44 11.2 Dete1·mination of longitude, .Decem.her 16, 1843-altitudes of Capella. OB ERVATIONS. Double altitudes of Capc1la. Time of chronometer. Dcg. n 73 71 M an t1me. mm. 29 53 IG src. 45 50 20 ------ -- ---- lt. 6 7 I nilrx rrror - + 1 min. 35 sec. JtESULT OF CALCULATION. Advance. min. 58 00 01 sec. 46.0 04.5 17.7 Longitude. - -----·~-------L-------·------------~------ ~------------ 461 [ 174 J fiECOND ENCAMPMENT 0N f:IUMMEI? L.-\ KB IJeterminalion of lowri! u.riP, Dr·cem61•r l~ 1, 13 . · · · -fl!htudt>s of CaJJc//a. OB-.E RV.\'rlO ' i. Double altitudes of Capdla. Tinw of' dnc-nomcu~r De~. mt.1'. sec. 94 tO 50 94 41 10 h. 7 95 10 00 96 3 1 00 95 51 10 ---------------------- fnuc" error - + 1 min. 37 bf'<' Moan tiu\e. lt. min. 7 1 sec. 30 HESULT OF CA LC ULATtON. Atl vutu•c. "' lr/1/l. 42 IIH1/ :iCC 51 21.0 56 07.0 f>7 24.0 fi 27. !5 59 27.0 - ------ Longitude. Determination of lo!igitutle, Oecembe'r lS, i 43-altiludes of a. Cygni. OBSERVATfON::O. Double altitude,; of u Cygni. Tunc of chronoructer Dcg. min. 79 0!3 I 78 10 78 21 78 04 77 4n Mean time. ------------------- h. min. ' 7 38 - sec. 57 sec. h. 50 a 30 15 25 15 Index error -= + 1 min. 37 ec. RESULT OF CALCULATION. h. 0 mirz. .sec. 42 33.1 miu. sec. 1!> 24.0 20 37.2 2l 35. 4. 22 29.2 2:) 27.0 Long.tude. |