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 |
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Results 1-5 of 8
Page 7
... circuit , number of batteries , repeaters , & c . 9. Uniform tables of time - reductions at receiving - station . 10. Uniform tables of time - reductions at sending - station . 11. Grouping of series of exchange - signals , including ...
... circuit , number of batteries , repeaters , & c . 9. Uniform tables of time - reductions at receiving - station . 10. Uniform tables of time - reductions at sending - station . 11. Grouping of series of exchange - signals , including ...
Page 13
... circuit with the chronometer , records its breaks . The chronometric breaks are made every second , except the sixtieth , which is omitted , to mark the minute . Removing the paper from the cylinder , both the minutes and the seconds ...
... circuit with the chronometer , records its breaks . The chronometric breaks are made every second , except the sixtieth , which is omitted , to mark the minute . Removing the paper from the cylinder , both the minutes and the seconds ...
Page 14
... circuit closed , it required only the simple movement of sliding a switch - button to cut off or put on either circuit , and thus send the chrono- metric break , or receive that of the connected station on the chronographic sheet , as ...
... circuit closed , it required only the simple movement of sliding a switch - button to cut off or put on either circuit , and thus send the chrono- metric break , or receive that of the connected station on the chronographic sheet , as ...
Page 15
... circuit between the stations Salt Lake and Cheyenne , counting the distance along the railroad , is some ' 550 miles , and does not include any battery or repeating - office . At Cheyenne there was a repeating - office ; but as the ...
... circuit between the stations Salt Lake and Cheyenne , counting the distance along the railroad , is some ' 550 miles , and does not include any battery or repeating - office . At Cheyenne there was a repeating - office ; but as the ...
Page 51
... circuit . In the northeast corner of the tent the chronograph was placed upon a solid and insulated framework . Wires for the connection of the chronometer and breaking - key were fastened to the tent - frame . The levels were also set ...
... circuit . In the northeast corner of the tent the chronograph was placed upon a solid and insulated framework . Wires for the connection of the chronometer and breaking - key were fastened to the tent - frame . The levels were also set ...
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Common terms and phrases
21 Cassiopeiæ 21h local sidereal 30m local sidereal 50 Draconis 61 Cygni 9 Draconis Aquilæ August azimuth bB aA CC Capricorni Ceti Cheyenne chron chronograph chronom Clamp Cloudy all day Colo Colorado Springs chronometer Colorado Springs Salt COLORADO TERRITORY Computations for Latitude Date Delphini Draconis 38 eter final result Groom Groombridge 3241 Groombridge 4163 Half-sum of dec July 28 July 30 July 31 Latitude of Cheyenne LATITUDE-OBSERVATIONS-Continued Level linations longitude Mean at 21h Mean for 19h Microm Micrometer star Name of Star nights Normal Equations Number Half-sum Observations for Latitude October 18 Pegasi Piscium probable error REDUCTION Remarks Right ascension Sagittarii Salt Lake chron SALT LAKE CITY SALT LAKE OBSERVATORY Springs chron Springs Salt Lake ẞ Aquarii ẞ Cephei ẞ Lyræ station TABLES OF TIME-REDUCTIONS TIME-REDUCTIONS AT RECEIVING-STATION-Continued UNIFORM TABLES Ursæ Minoris UTAH TERRITORY wires Wyoming Territory δε ΔΤ