OCR Text |
Show [ 174 ] 376 NOON HA L'l' ON 'fJIE I,J'r'fLE ANDY RIVER. IJeterminat ion of latitude, .!l.ugusl 14, 1 13 -'meridian altitudes of tlte sun. OB ' ERVATION Double altitudes of the sun's lower limb. Time of dmmo111ctcr. DCI{o mi11. 'cc. 123 39 10 123 41 00 123 42 05 123 4'1 30 123 46 00 123 46 50 123 46 45 , 123 48 10 12:3 47 f>5 123 4 00 123 47 25 12:3 47 15 123 45 30 123 45 10 123 44 25 123 43 35 • Index error = + 1 min. 40 sec. RE ULT OF CALCULATION. -----------;-------- - True altitude. De~. mm. sec. 62 09 62 Apparent time of tran. it. lt. rnm. sec. 1 16 36 -- !t. mm. sec. 1 OG 46 07 57 09 06 10 21 11 41 12 55 13 33 11 25 15 23 16 10 17 08 18 02 20 0:3 21 00 21 57 22 4.2 Latitude. Dcfj. mm. aec. 42 15 11 377 [ 174 J F.NCAMI\WE'i'l' 0~ 'l'Jm T.E£i'T B,\ K OF UREEN RIVEH. J)etermination oflongil,tde, .!lug ust 15, I '43-alt itudes of .!Jrcturus. OH '1~ R V ATION ·. Double allitudcs or T irno of rhron onwtcr. Double altitudes of Time of chronometer. Arcturus. Deg. 58 67 57 66 56 rnin. sec. 13 40 35 JO 13 10 46 30 1:3 10 Mean time. h. min. sec. 9 12 18 h. 10 Arcturus. nun. ,\eC. Dct;. win. I!) 2t1 )I 5!-J 10 ' l 0!) 55 }{j ~2 07 51 50 2:3 16 I' !)tl 2!) 24 16 II 54 09 I11tlcx crf·or = - 2 sec. UE 'UL'l' OJ.' CALCULATION. Advance. ft. nun. sec. 1 12 6(; . S('C. 00 00 :30 50 50 h. min. sec. 10 26 13.5 27 1 .o 2 26.4 29 25.0 30 l .3 Longitude. Deg. mh-t. sec. 110 05 05 Determinal ion of !at itude, .llugust 15, 184 3-attitudes of Polaris. -- OilS:ERVATIONS. Double altitudes of Polari~. Time of chronometer. Deg. min. sec. lt. mm. sec. :3 11 40 10 36 29 83 16 10 38 17 83 47 10 39 61 83 19 00 42 2:) 83 50 00 -:13 3G 8:3 51 45 14 49 83 52 10 ''6 27 83 53 30 47 54 83 55 20 49 42 83 55 15 50 36 I ntlcx error c= - 2 sec. UE. UJ.T OF CALCULATION. True altitutlc. -- Deg. min. 11 53 sec. [,~ Mean time. h. min. sec. 9 31 03 D,g. rnin. sec. 1l 53 b4 |