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 |
From inside the book
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Page 7
... and observers ; also name of computer or computers . 7. Tabulation of stars used , and number of observations . 8. Instrumental values ; circumstances of telegraphic communication , i . e . , length of circuit , number of batteries ...
... and observers ; also name of computer or computers . 7. Tabulation of stars used , and number of observations . 8. Instrumental values ; circumstances of telegraphic communication , i . e . , length of circuit , number of batteries ...
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 14
posts on this board , and the 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 chronometric break , or receive that of the connected station on ...
posts on this board , and the 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 chronometric break , or receive that of the connected station on ...
Page 15
... o " .622 ; of the striding - level A , 1 " .21 ; and of the zenith - level , 1'.10 . The wire which made the circuit between the stations Salt Lake and Cheyenne , counting the distance along the railroad , is some ...
... o " .622 ; of the striding - level A , 1 " .21 ; and of the zenith - level , 1'.10 . The wire which made the circuit between the stations Salt Lake and Cheyenne , counting the distance along the railroad , is some ...
Page 51
... supported by the framework of the tent and one telegraph - post 30 feet in height . A ground - wire was used after switching in the Western Union office to complete the circuit . In the northeast corner of the tent the chronograph ...
... supported by the framework of the tent and one telegraph - post 30 feet in height . A ground - wire was used after switching in the Western Union office to complete the circuit . In the northeast corner of the tent the chronograph ...
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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 |