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
Uniform tables of time reductions at sending and receiving stations Correction and rate of chronometers . Grouping of series of exchange of signals Personal equation Probable error . Resulting longitude . Reduction of the latitude ...
Uniform tables of time reductions at sending and receiving stations Correction and rate of chronometers . Grouping of series of exchange of signals Personal equation Probable error . Resulting longitude . Reduction of the latitude ...
Page 8
4 Tresulting error of the chronometer after the mean of the wires is corrected for rate and level . = ABBREVIATIONS AND SIGNS . 4T , adopted mean error of chronometer . 0 ST = 4T - 4T . = 4Terror of the chronometer . v difference ...
4 Tresulting error of the chronometer after the mean of the wires is corrected for rate and level . = ABBREVIATIONS AND SIGNS . 4T , adopted mean error of chronometer . 0 ST = 4T - 4T . = 4Terror of the chronometer . v difference ...
Page 13
Along this cylinder a screw carries a pen , which , being in the same circuit with the chronometer , records its breaks . The chronometric breaks are made every second , except the sixtieth , which is omitted , to mark the minute .
Along this cylinder a screw carries a pen , which , being in the same circuit with the chronometer , records its breaks . The chronometric breaks are made every second , except the sixtieth , which is omitted , to mark the minute .
Page 28
The following table shows the corrections and the rate of the chronometers used at Cheyenne and Salt Lake City : Date . 1872 . October 5 Date . ... I 52 55.725 S. 43.130 40.725 37.800 37.085 33.725 Correction of chronometer . h . m .
The following table shows the corrections and the rate of the chronometers used at Cheyenne and Salt Lake City : Date . 1872 . October 5 Date . ... I 52 55.725 S. 43.130 40.725 37.800 37.085 33.725 Correction of chronometer . h . m .
Page 51
On it the switchboard and galvanic battery were placed ; the chronometer being also placed there during the observations . The connection from the switch - board to the Western Union Telegraph office was made by a line 600 feet in ...
On it the switchboard and galvanic battery were placed ; the chronometer being also placed there during the observations . The connection from the switch - board to the Western Union Telegraph office was made by a line 600 feet in ...
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Common terms and phrases
61 Cygni 9 Draconis Adopted Aquarii Aquilæ astronomical August azimuth Capricorni Cephei Changed charge Cheyenne chron chronograph chronom chronometer circuit Clamp clear Cloudy Colo Colorado Springs Colorado Springs chronometer COLORADO TERRITORY connection Corrections Cygni Date Description Determination difference Draconis Engineers eter exchange final result Groom heavy Herculis hour July 30 late Latitude LATITUDE-OBSERVATIONS-Continued Level longitude Lyræ Mean Mean at 24h Mean for 17h Meridian Micrometer star minutes Name of Star nights Normal Equations observations Observations for Latitude.-Station October October 18 Ophiuchi pair Pegasi Piscium places probable error rain reading received record REDUCTION Remarks Sagittarii Salt Lake chron SALT LAKE CITY SALT LAKE OBSERVATORY shows Springs chron station SURVEYS TABLES OF TIME-REDUCTIONS TIME-REDUCTIONS AT RECEIVING-STATION-Continued UNIFORM TABLES United Ursa UTAH TERRITORY values Washington Western wind wires Wyoming Territory
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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.
Bibliographic information
| Title | 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 ... |
| Author | Geographical Surveys West of the 100th Meridian (U.S.) |
| Publisher | U.S. Government Printing Office, 1874 |
| Original from | Harvard University |
| Digitized | 20 Nov 2007 |
| Length | 82 pages |
| Export Citation | BiBTeX EndNote RefMan |