Report of the exploring expedition to the Rocky Mountains in the year 1842, and to Oregon and north California in the years 1843-44 . 30 10 35 Thermometer 57°.Index error = + 4 sec. RESULT OF CALCULATION. True altitude. Mean time. Latitude. Deg. min. 30 53 h. min. 50 59 Deg. min. 58 37 (Xj^Correct this latitude on map. SECOND ENCAMPMENT ON ELK HEAD of latitude, June 11, 1844—altitudes of Polaris. OBSERVATIONS. Double altitudes of Polaris. Time of chronometer. Deg. min. sec. h. min. sec. 79 14 40 7 19 47 79 15 40 22 14 79 16 25 24 01 79 16 40 26 19 79 17
Report of the exploring expedition to the Rocky Mountains in the year 1842, and to Oregon and north California in the years 1843-44 . 30 10 35 Thermometer 57°.Index error = + 4 sec. RESULT OF CALCULATION. True altitude. Mean time. Latitude. Deg. min. 30 53 h. min. 50 59 Deg. min. 58 37 (Xj^Correct this latitude on map. SECOND ENCAMPMENT ON ELK HEAD of latitude, June 11, 1844—altitudes of Polaris. OBSERVATIONS. Double altitudes of Polaris. Time of chronometer. Deg. min. sec. h. min. sec. 79 14 40 7 19 47 79 15 40 22 14 79 16 25 24 01 79 16 40 26 19 79 17 30 28 02 79 18 00 29 07 Index error = -J- 6 sec. RESULT OF CALCULATION. True altitude. Mean time. Latitude. Deg. min. sec. h. min. sec. Deg. min. sec. 39 37 07 9 14 42 41 01 11 C 174 ] 538 SECOND ENCAMPMENT ON ELK HEAD of longitude, June 11, 1844—ultitvdes of a. Cygni. OBSERVATIONS. Double altitudes of a Cygni. Time of chronometer. Deg. min. sec. h. min. sec. 57 21 40 7 32 57 51 40 34 58 13 00 35 Bad observations. Thermometer 53°. Index error = -j- 6 sec. Mean time RESULT OF Longitude. ENCAMPMENT IN THE VALLEY OF THE NORTH FORK OF THE PLATTE,AT THE FOOT OF THE MOUNTAINS. Determination of latitude, June 13, 1844—altitudes of Polaris. OBSERVATIONS. Double altitudes of Polaris. Time of chronometer. Deg. min. sec. h. min. sec. 79 50 40 7 31 46 79 57 40 33 02 79 58 10 34 16 79 59 00 36 08 79 59 15 37 25 79 59 40 38 31 80 00 35 40 06 80 00 15 41 12 80 01 15 42 18 80 01 20 43 25 Index error = 4-10 sec. RESULT OF CALCULATION. True altitude. Mean time. Latitude. Deg. min. fee. h. min. sec. Deg. min. sec. 39 58 36 9 29 10 41 18 48 539 [ 174 j ENCAMPMENT IN THE VALLEY OF THE NORTH FORK OF THE PLATTE, ATTHE FOOT OF THE MOUNTAINS. Determination of longitude, June 13, 1844—altitudes of a jlquilae. OBSERVATIONS. Double altitudes of a Aquilae. Time of chronometer. Deg. min. sec. 43 33 50 44 09 4044 37 40 h. min. 47 49 5
Size: 3066px × 815px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorunitedstatesarmycorps, bookcentury1800, bookdecade1840
