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 11
... windy nights , the elements presented no obstacle whatever to a continued series of observations . In the early morning it would become cold enough to form ice , making it sufficiently uncomfortable to restrain the ardor UNITED STATES ...
... windy nights , the elements presented no obstacle whatever to a continued series of observations . In the early morning it would become cold enough to form ice , making it sufficiently uncomfortable to restrain the ardor UNITED STATES ...
Page 12
... wind . Estimated force of wind . 7 a . m . to 7 p . m . 7 p.m. to 7 a . m . 7 a . m . to 7 p . m . 7 p . m . to 7 a . m . 1872 . October 5 NW . N. I I 6 SW . O I O 7 NW . O I 8 NE . O I O 9 SE . O I O ΙΟ SE . I II N. I 12 N. I 13 O 14 ...
... wind . Estimated force of wind . 7 a . m . to 7 p . m . 7 p.m. to 7 a . m . 7 a . m . to 7 p . m . 7 p . m . to 7 a . m . 1872 . October 5 NW . N. I I 6 SW . O I O 7 NW . O I 8 NE . O I O 9 SE . O I O ΙΟ SE . I II N. I 12 N. I 13 O 14 ...
Page 50
... wind for three hours before and three hours after the given time ; also the estimated force of wind for the same time . The last column gives the general appearance of the sky , and needs no further explanation . It shows under what ...
... wind for three hours before and three hours after the given time ; also the estimated force of wind for the same time . The last column gives the general appearance of the sky , and needs no further explanation . It shows under what ...
Page 72
... wind . 1873 . t . d . d . d . 1873 . t . d . d . d . Aug. 2 7505 5 48.0 24.7 23.5 Aug. 4 357 6 96.9 23.0 21.0 7521 14 45.6 24.6 23.5 Cloudy . 441 12 63.9 25.8 18.3 7505 5 50.6 24.3 15.5 Air good . 474 5 60.8 21.8 22.2 7521 14 23.7 3.0 ...
... wind . 1873 . t . d . d . d . 1873 . t . d . d . d . Aug. 2 7505 5 48.0 24.7 23.5 Aug. 4 357 6 96.9 23.0 21.0 7521 14 45.6 24.6 23.5 Cloudy . 441 12 63.9 25.8 18.3 7505 5 50.6 24.3 15.5 Air good . 474 5 60.8 21.8 22.2 7521 14 23.7 3.0 ...
Page 78
... winds , and great changes in temperature con- stantly affected the instrument . It is customary in this office to select for latitude only thirty - five pairs of stars , which have to be observed on five different nights . But the ...
... winds , and great changes in temperature con- stantly affected the instrument . It is customary in this office to select for latitude only thirty - five pairs of stars , which have to be observed on five different nights . But the ...
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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.