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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Page 3
... observatory . 50 Description of instruments used 51 Points of connection . 52 Tabulation of stars used for time . 53 Corrections and rates of chronometers 64 Signals for determination of longitude between Salt Lake City and Colorado ...
... observatory . 50 Description of instruments used 51 Points of connection . 52 Tabulation of stars used for time . 53 Corrections and rates of chronometers 64 Signals for determination of longitude between Salt Lake City and Colorado ...
Page 11
... observatory at Salt Lake , is situated in the western part of the town , in lot 11 , block 413 , and is northwest from the junction of the branch- road leading to the depot of Fort D. A. Russell with the main stem of the Union Pacific ...
... observatory at Salt Lake , is situated in the western part of the town , in lot 11 , block 413 , and is northwest from the junction of the branch- road leading to the depot of Fort D. A. Russell with the main stem of the Union Pacific ...
Page 13
... Observatory . It consists of clock - work driven by a weight , and can be adjusted to run some two hours . The ... Salt Lake by a switch at Ogden . The local connections , including the chronometer , the chronograph , and the ...
... Observatory . It consists of clock - work driven by a weight , and can be adjusted to run some two hours . The ... Salt Lake by a switch at Ogden . The local connections , including the chronometer , the chronograph , and the ...
Page 14
... Salt Lake , while the observations at Cheyenne were made by myself , and also the longitude reductions for both stations . Prof. W. A. Rogers , of Harvard College Observatory , computed the latitude - observations , and they were ...
... Salt Lake , while the observations at Cheyenne were made by myself , and also the longitude reductions for both stations . Prof. W. A. Rogers , of Harvard College Observatory , computed the latitude - observations , and they were ...
Page 15
... 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 observatory , as elsewhere stated ...
... 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 observatory , as elsewhere stated ...
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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