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 13
... United States Naval Observatory . It consists of clock - work driven by a weight , and can be adjusted to run some two hours . The regulation of the movement is effected by a steel spring , with movable balances , strik- ing on a fly ...
... United States Naval Observatory . It consists of clock - work driven by a weight , and can be adjusted to run some two hours . The regulation of the movement is effected by a steel spring , with movable balances , strik- ing on a fly ...
Page 45
... United States Coast Survey , and Washington to be 5h 8m 128.12 west of Greenwich according to the report of Rear - Admiral B. F. Sands , Superintendent of the United States Naval Observatory , October 6 , 1871 , Cheyenne is in longitude ...
... United States Coast Survey , and Washington to be 5h 8m 128.12 west of Greenwich according to the report of Rear - Admiral B. F. Sands , Superintendent of the United States Naval Observatory , October 6 , 1871 , Cheyenne is in longitude ...
Page 51
... United States Naval Observatory invented by Professor William Harkness ; the barrel being 8 inches in diameter and 24 inches . long , and makes one revolution a minute . The chronograph worked very well when it was cleaned before ...
... United States Naval Observatory invented by Professor William Harkness ; the barrel being 8 inches in diameter and 24 inches . long , and makes one revolution a minute . The chronograph worked very well when it was cleaned before ...
Page 79
... United States Lake Survey , for stars taken from Professor Safford's Catalogue for 981 Stars , ± 0.53 , the probable uncertainty of the final result will be , o " .082 . Resulting Astronomical Co - ordinates for the Astronomical ...
... United States Lake Survey , for stars taken from Professor Safford's Catalogue for 981 Stars , ± 0.53 , the probable uncertainty of the final result will be , o " .082 . Resulting Astronomical Co - ordinates for the Astronomical ...
Page 80
... UNITED STATES ENGINEER OFFICE , GEOGRAPHICAL AND GEOLOGICAL EXPLORATIONS AND SURVEYS WEST OF THE IOOTH MERIDIAN , May 1 , 1873 . Memorandum of instructions for conducting observations for longitude and latitude at a main or primary ...
... UNITED STATES ENGINEER OFFICE , GEOGRAPHICAL AND GEOLOGICAL EXPLORATIONS AND SURVEYS WEST OF THE IOOTH MERIDIAN , May 1 , 1873 . Memorandum of instructions for conducting observations for longitude and latitude at a main or primary ...
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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
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.