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
... Final results for longitude . . Mean places of stars for 1873 used for determination of latitude Observations for latitude Computations for latitude Discussion of probable error Astronomical co - ordinates Instructions for conducting ...
... Final results for longitude . . Mean places of stars for 1873 used for determination of latitude Observations for latitude Computations for latitude Discussion of probable error Astronomical co - ordinates Instructions for conducting ...
Page 30
... final result is by the formula , Error = 0.6745 A √ Σ ( v2 ) ( n − 1 ) = ± 0 ′′ .017 . n − ( 14. ) RESULTING LONGITUDE . From the foregoing I conclude that the difference of longitude between Salt Lake City observatory and the ...
... final result is by the formula , Error = 0.6745 A √ Σ ( v2 ) ( n − 1 ) = ± 0 ′′ .017 . n − ( 14. ) RESULTING LONGITUDE . From the foregoing I conclude that the difference of longitude between Salt Lake City observatory and the ...
Page 45
... final result for longitude is subject , as already stated , to a correction for the personal equation of the observers . It is possible , also , that the longitude of Salt Lake may be changed when the observations made last October at ...
... final result for longitude is subject , as already stated , to a correction for the personal equation of the observers . It is possible , also , that the longitude of Salt Lake may be changed when the observations made last October at ...
Page 59
... final result on account of the doubtful position of the star . SALT LAKE CITY , UTAH TERRITORY , July 29 , 59.
... final result on account of the doubtful position of the star . SALT LAKE CITY , UTAH TERRITORY , July 29 , 59.
Page 68
... 2. The Colorado Springs chronometer is 0.095 later than the Salt Lake chronometer on the Colorado Springs chronograph ; therefore the mean is , 18h 39m 78.626 . Final Results for Longitude . Signals sent from- Stations of 68.
... 2. The Colorado Springs chronometer is 0.095 later than the Salt Lake chronometer on the Colorado Springs chronograph ; therefore the mean is , 18h 39m 78.626 . Final Results for Longitude . Signals sent from- Stations of 68.
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Common terms and phrases
12-Year Cat 21h local sidereal 30 late 30m local sidereal 50 Draconis 61 Cygni 9 Draconis Aquarii August bB aA cC Capricorni Cassiopeia Ceti Cheyenne chron chronograph chronom Clamp Cloudy all day Colo Colorado Springs chronometer COLORADO TERRITORY Computations for Latitude Correction of chronometer Date Delphini Description of observatory eter final result Groom Groombridge 3241 Groombridge 4163 Half-sum of dec HARVARD COLLEGE OBSERVATORY Herculis July 30 latitude Observations Latitude of Cheyenne LATITUDE-OBSERVATIONS-Continued Level linations Mean at 24h Mean for 19h Meridian Micrometer Remarks Micrometer star Name of Star nights Normal Equations Number Half-sum Observations for Latitude.-Station October 14 October 16 Pegasi Piscium probable error REDUCTION Right Ascension Salt Lake chron SALT LAKE CITY SALT LAKE OBSERVATORY Springs chron T. D. Oct TABLES OF TIME-REDUCTIONS Tabulation of Stars TIME-REDUCTIONS AT RECEIVING-STATION-Continued UNIFORM TABLES Ursa Minoris UTAH TERRITORY wires Wyoming Territory ΔΤ ΙΟ Ο.ΟΙ
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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.