Report Upon the Determination of the Astronomical Co-ordinates of the Primary Stations at Cheyenne, Wyoming Territory, and Colorado Springs, Colorado Territory, Made During the Years 1872 and 1873: Geographical and Geological Explorations and Surveys West of the One Hundredth Meridian, First Lieut. George M. Wheeler, Corps of Engineers, in Charge. Dr. F. Kampf and J. H. Clark, Civilian Astronomical AssistantsU.S. Government Printing Office, 1874 - 82 pages |
From inside the book
Results 1-5 of 7
Page 13
... record , besides his other duties as assistant . ( 5. ) DESCRIPTION OF INSTRUMENTS USED . ( a . ) Transit . The transit used was the meridian - zenith - instrument No. 28 , made by Würde- mann , a description of which is given in Dr ...
... record , besides his other duties as assistant . ( 5. ) DESCRIPTION OF INSTRUMENTS USED . ( a . ) Transit . The transit used was the meridian - zenith - instrument No. 28 , made by Würde- mann , a description of which is given in Dr ...
Page 29
... record . Means of signals sent and received . errors . Chronometric Local sidereal times . Difference of longitude . Means . 1872 . October 5 . h . m . S. Cheyenne chron . O 55 6.20 Salt Lake .. Salt Lake chron . 22 36 1.51 0- h . m . S ...
... record . Means of signals sent and received . errors . Chronometric Local sidereal times . Difference of longitude . Means . 1872 . October 5 . h . m . S. Cheyenne chron . O 55 6.20 Salt Lake .. Salt Lake chron . 22 36 1.51 0- h . m . S ...
Page 30
... recording time , technically known as the personal equation , is still involved in the lon- gitude . To determine this ... record , in both instances , was made on a chrono- graph . The result shows a large difference — Mr . Austin ...
... recording time , technically known as the personal equation , is still involved in the lon- gitude . To determine this ... record , in both instances , was made on a chrono- graph . The result shows a large difference — Mr . Austin ...
Page 69
... record . Mean of sig- nals sent and received . Time - correc- tion . Corrected time . Difference of longitude . Double wave - time . Means . 1873 . July 29 . Salt Lake Colo . Springs chron . Salt Lake chron . h . m . 18 9 0.II S. S. h ...
... record . Mean of sig- nals sent and received . Time - correc- tion . Corrected time . Difference of longitude . Double wave - time . Means . 1873 . July 29 . Salt Lake Colo . Springs chron . Salt Lake chron . h . m . 18 9 0.II S. S. h ...
Page 80
... sending of the signals , the strict following - out of the above is not necessary . These instructions are made with the understanding that a twenty - six or thirty- 81 two inch Würdemann instrument is used , with recording.
... sending of the signals , the strict following - out of the above is not necessary . These instructions are made with the understanding that a twenty - six or thirty- 81 two inch Würdemann instrument is used , with recording.
Other editions - View all
Common terms and phrases
12-Year Cat 24h local sidereal 30 late 30m local sidereal 38 Cassiopeiæ 61 Cygni 79 Draconis Aquilæ August bB aA cC Capricorni Ceti Cheyenne chron chronograph chronom circuit Clamp Cloudy all day Colorado Springs chronometer COLORADO TERRITORY Computations for Latitude Correction of chronometer Date Delphini eter final result Groom Groombridge 3241 Groombridge 4163 Half-sum of dec Herculis instrument July 28 July 30 Latitude of Cheyenne LATITUDE-OBSERVATIONS-Continued Level linations longitude Mean at 24h Mean for 19h Meridian Microm Micrometer Remarks Micrometer star Name of Star nights Normal Equations Number Half-sum O.II Observations for Latitude.-Station October 14 October 18 Pegasi personal equation probable error REDUCTION Right Ascension Sagittarii Salt Lake chron SALT LAKE CITY SALT LAKE OBSERVATORY Springs chron SURVEYS WEST TABLES OF TIME-REDUCTIONS Tabulation of Stars TIME-REDUCTIONS AT RECEIVING-STATION-Continued UNIFORM TABLES Ursa Minoris UTAH TERRITORY wires Wyoming Territory ΔΤ ΙΟ