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
... Astronomical Assistants Geographical Surveys West of the 100th Meridian ... micrometer- screw , o " .6216 ; of the striding - level A , 1 " .21 ; and of ... stars observed , distinctly marked by arbitrary breaks , and easily read off ...
... Astronomical Assistants Geographical Surveys West of the 100th Meridian ... micrometer- screw , o " .6216 ; of the striding - level A , 1 " .21 ; and of ... stars observed , distinctly marked by arbitrary breaks , and easily read off ...
Page 15
... Astronomical Assistants Geographical Surveys West of the 100th Meridian (U.S.). Tabulation of Stars used for Determination of Time , & c . - Continued . October- October- Name of Star ... micrometer - screw , o " .622 ; of the striding - ...
... Astronomical Assistants Geographical Surveys West of the 100th Meridian (U.S.). Tabulation of Stars used for Determination of Time , & c . - Continued . October- October- Name of Star ... micrometer - screw , o " .622 ; of the striding - ...
Page 32
... Micrometer Remarks . Date . star . reading . No , of Micrometer star . reading . Remarks . N. S. N. S. 1872 . T. D. 1872 . T. D. Oct. I 7101 27 34.5 15.0 39.0 Oct. I 8279 II 43.2 22.5 26.5 7114 5 45.5 30 late . 8296 23 44.5 7.0 42.0 ...
... Micrometer Remarks . Date . star . reading . No , of Micrometer star . reading . Remarks . N. S. N. S. 1872 . T. D. 1872 . T. D. Oct. I 7101 27 34.5 15.0 39.0 Oct. I 8279 II 43.2 22.5 26.5 7114 5 45.5 30 late . 8296 23 44.5 7.0 42.0 ...
Page 33
... star . reading . No of Micrometer star . reading . Remarks . N. S. N. S. 1872 . T. D. .1872 . T. D. Oct. 3 7721 28 77.6 30.5 11.5 Oct. 8 6722 2 63.0 15.0 31.5 7731 28 98.0 • 6754 23 66.8 37.0 10.0 7746 O 22.5 15.5 26.5 6771 24 89.5 16.0 ...
... star . reading . No of Micrometer star . reading . Remarks . N. S. N. S. 1872 . T. D. .1872 . T. D. Oct. 3 7721 28 77.6 30.5 11.5 Oct. 8 6722 2 63.0 15.0 31.5 7731 28 98.0 • 6754 23 66.8 37.0 10.0 7746 O 22.5 15.5 26.5 6771 24 89.5 16.0 ...
Page 34
... Micrometer Remarks . Date . star . reading . No. of Micrometer star . reading . Remarks . N. S. N. S. 1872 . Oct. 8 T. D. 7972 17 34.9 32.0 22.0 1872 . Oct. 8 Ꭲ , D. 572 25 8.6 19.0 35.0 7978 ΙΟ 3.0 573 24 98.5 42.0 II.0 7984 22 13.5 ...
... Micrometer Remarks . Date . star . reading . No. of Micrometer star . reading . Remarks . N. S. N. S. 1872 . Oct. 8 T. D. 7972 17 34.9 32.0 22.0 1872 . Oct. 8 Ꭲ , D. 572 25 8.6 19.0 35.0 7978 ΙΟ 3.0 573 24 98.5 42.0 II.0 7984 22 13.5 ...
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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.