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 8
... mean error of chronometer . = & T = 4T。— 4T . 4Terror of the chronometer . v difference between mean final correction of chronometer and 4T . REPORT ON ASTRONOMICAL OPERATIONS , CONDUCTED DURING THE FIELD - ABBREVIATIONS AND SIGNS. ...
... mean error of chronometer . = & T = 4T。— 4T . 4Terror of the chronometer . v difference between mean final correction of chronometer and 4T . REPORT ON ASTRONOMICAL OPERATIONS , CONDUCTED DURING THE FIELD - ABBREVIATIONS AND SIGNS. ...
Page 29
... Difference of longitude . Means . 1872 . October 5 . h . m . Cheyenne chron . O 55 S. 6.20 h . m . S. - I 52 55.69 ... differences there may 29.
... Difference of longitude . Means . 1872 . October 5 . h . m . Cheyenne chron . O 55 S. 6.20 h . m . S. - I 52 55.69 ... differences there may 29.
Page 30
... differences there may have been between Mr. Austin and myself in recording time , technically known as the personal equation , is still involved in the lon- gitude . To determine this difference , we had two nights ' observations ...
... differences there may have been between Mr. Austin and myself in recording time , technically known as the personal equation , is still involved in the lon- gitude . To determine this difference , we had two nights ' observations ...
Page 68
... differences where I find the full minute , I develop the fact that the Colorado Springs chronometer breaks 0.110 later than the Salt Lake break ; therefore the mean of the signals sent from Salt Lake and received on the Colorado Springs ...
... differences where I find the full minute , I develop the fact that the Colorado Springs chronometer breaks 0.110 later than the Salt Lake break ; therefore the mean of the signals sent from Salt Lake and received on the Colorado Springs ...
Page 69
... Difference of Double longitude . wave - time . Means . 1873 . July 29 . Salt Lake . Colo . Springs chron . Salt Lake chron . . . h . m . 18 9 9 23 24.95 S. O.II h . m . - 0 10 11.72 S. h . m . 17 58 48.39 S. h . m . S. S. S. +8 7 5.46 ...
... Difference of Double longitude . wave - time . Means . 1873 . July 29 . Salt Lake . Colo . Springs chron . Salt Lake chron . . . h . m . 18 9 9 23 24.95 S. O.II h . m . - 0 10 11.72 S. h . m . 17 58 48.39 S. h . m . S. S. S. +8 7 5.46 ...
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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.