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 Springs ...
... 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 Springs ...
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 was west of the telegraph - office , and the main connection was effected by a loop into one of the main overland wires and put in communication with Salt Lake by a switch at Ogden . The local connections , including the ...
... observatory was west of the telegraph - office , and the main connection was effected by a loop into one of the main overland wires and put in communication with Salt Lake by a switch at Ogden . The local connections , including 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
12-Year Cat 24h local sidereal 30m local sidereal 38 Cassiopeiæ 50 Draconis 61 Cygni 9 Draconis Andromedæ Aquilæ August bB aA CC Capricorni Ceti Cheyenne chron chronograph chronom Clamp Cloudy all day Colo Colorado Springs chronometer COLORADO TERRITORY Computations for Latitude Date Delphini Draconis 22 eter final result Groom Groombridge 3241 Groombridge 4163 Half-sum of dec HARVARD COLLEGE OBSERVATORY July 31 Latitude of Cheyenne LATITUDE-OBSERVATIONS-Continued Level linations longitude Mean at 24h Mean for 17h Microm Micrometer star Name of Star nights Normal Equations Number Half-sum Observations for Latitude October 14 October 16 Ophiuchi Pegasi Piscium probable error REDUCTION Remarks Right Ascension Sagittarii Salt Lake chron SALT LAKE CITY SALT LAKE OBSERVATORY Springs chron ẞ Aquarii ẞ Cephei ẞ Lyræ TABLES OF TIME-REDUCTIONS Tabulation of Stars TIME-REDUCTIONS AT RECEIVING-STATION-Continued UNIFORM TABLES Ursæ Minoris UTAH TERRITORY wires Wyoming Territory δε ΔΤ
Popular passages
Page 53 - Ocean, the first thing which strikes us is, that, the north-east and south-east monsoons, which are found the one on the north and the other on...
Page 5 - Printing-Office, and that fifteen hundred copies be furnished on requisition from this Office. Very respectfully, your obedient servant, AA HUMPHREYS, Brigadier-Oeneral and Chief of Engineers.