Report Upon the Determination of the Astronomical Coordinates 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 MeridianU.S. Government Printing Office, 1874 - 82 pages |
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Page 3
... instruments used Connections , ( telegraphic ) Tabulation of stars used Instrumental values . . Uniform tables of time reductions at sending and receiving stations Correction and rate of chronometers Grouping of series of exchange of ...
... instruments used Connections , ( telegraphic ) Tabulation of stars used Instrumental values . . Uniform tables of time reductions at sending and receiving stations Correction and rate of chronometers Grouping of series of exchange of ...
Page 7
... instruments used . 6. Points with which connections were made ; nights of observation , and observ- ers ; also name of computer or computers . 7. Tabulation of stars used , and number of observations . 8. Instrumental values ...
... instruments used . 6. Points with which connections were made ; nights of observation , and observ- ers ; also name of computer or computers . 7. Tabulation of stars used , and number of observations . 8. Instrumental values ...
Page 12
... instrument from the weather when not in use , and the latter to keep off the wind and dust while observing . Here , and at other stations previously occupied , the opening for the meridian - line in the observatory was entirely ...
... instrument from the weather when not in use , and the latter to keep off the wind and dust while observing . Here , and at other stations previously occupied , the opening for the meridian - line in the observatory was entirely ...
Page 13
... INSTRUMENTS USED . ( a . ) Transit . The transit used was the meridian - zenith - instrument No. 28 , made by Würde- mann , a description of which is given in Dr. Kampf's report , and it was mounted on a large block of wood . The ...
... INSTRUMENTS USED . ( a . ) Transit . The transit used was the meridian - zenith - instrument No. 28 , made by Würde- mann , a description of which is given in Dr. Kampf's report , and it was mounted on a large block of wood . The ...
Page 15
... instrument No. 28 are , for one division of the micrometer - screw , o " .622 ; of the striding - level A , 1 " .21 ; and of the zenith - level , ' .10 . The wire which made the circuit between the stations Salt Lake and Cheyenne ...
... instrument No. 28 are , for one division of the micrometer - screw , o " .622 ; of the striding - level A , 1 " .21 ; and of the zenith - level , ' .10 . The wire which made the circuit between the stations Salt Lake and Cheyenne ...
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Common terms and phrases
12-Year Cat 21h local sidereal 30m local sidereal 50 Draconis 61 Cygni 9 Draconis Aquarii August bB aA cC Capricorni Cassiopeiæ Ceti Cheyenne chron chronograph chronom circuit Clamp Cloudy all day Colo Colorado Springs chronometer COLORADO TERRITORY Computations for Latitude Correction of chronometer Delphini eter final result Groom Groombridge 3241 Groombridge 4163 Half-sum of dec Herculis instrument July 28 July 30 Latitude of Cheyenne LATITUDE-OBSERVATIONS-Continued Level linations longitude Mean at 24h Mean for 17h Micrometer star Name of Star nights Normal Equations Number Half-sum O.II Observations for Latitude.-Station October 14 October 19 Pegasi personal equation Piscium probable error REDUCTION Remarks Right Ascension Sagittarii Salt Lake chron SALT LAKE CITY SALT LAKE OBSERVATORY Springs chron ß Lyræ 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