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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Results 1-5 of 18
Page 3
... Correction and rate of chronometers Grouping of series of exchange of signals Personal equation Probable error ... Corrections and rates of chronometers Signals for determination of longitude between Salt Lake City and Colorado ...
... Correction and rate of chronometers Grouping of series of exchange of signals Personal equation Probable error ... Corrections and rates of chronometers Signals for determination of longitude between Salt Lake City and Colorado ...
Page 8
... corrections . A , B , C , azimuth , level , and collimation factors . Tobserved time reduced to the mean of wires and corrected for rate . T'observed time corrected for instrumental errors . AR . apparent right ascension of star . 4 , T ...
... corrections . A , B , C , azimuth , level , and collimation factors . Tobserved time reduced to the mean of wires and corrected for rate . T'observed time corrected for instrumental errors . AR . apparent right ascension of star . 4 , T ...
Page 27
... Normal Equations . 7 dt + 5.91a — 8.16c = 3.27 a = - - 0.950 5.91 dt + 70.49a — 82.36c = − 75.09 - c = +0.140 - ---- - 8.16 dt 82.36a + 122.80 c = + 90.98 St = +0.490 The following table shows the corrections and the rate of 27.
... Normal Equations . 7 dt + 5.91a — 8.16c = 3.27 a = - - 0.950 5.91 dt + 70.49a — 82.36c = − 75.09 - c = +0.140 - ---- - 8.16 dt 82.36a + 122.80 c = + 90.98 St = +0.490 The following table shows the corrections and the rate of 27.
Page 28
... corrections and the rate of the chronometers used at Cheyenne and Salt Lake City : CHEYENNE . - NEGUS 1499 . Date . Local sidereal hour . Correction of chronometer . Rate per hour . 1872 . October 5 h . 22.50 h . m . S. I 52 55.725 14 ...
... corrections and the rate of the chronometers used at Cheyenne and Salt Lake City : CHEYENNE . - NEGUS 1499 . Date . Local sidereal hour . Correction of chronometer . Rate per hour . 1872 . October 5 h . 22.50 h . m . S. I 52 55.725 14 ...
Page 30
... correction for colli- mation ( c ) ; in the former case it was obtained from a preliminary reduction . All the observations at both stations were made under the same circumstances and conditions , except the night of the 14th at ...
... correction for colli- mation ( c ) ; in the former case it was obtained from a preliminary reduction . All the observations at both stations were made under the same circumstances and conditions , except the night of the 14th at ...
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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