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 |
From inside the book
Results 1-5 of 15
Page 7
... nights of observation , and observ- ers ; also name of computer or computers . 7. Tabulation of stars used , and number of observations . 8. Instrumental values ; circumstances of telegraphic communication , i . e . , length of circuit ...
... nights of observation , and observ- ers ; also name of computer or computers . 7. Tabulation of stars used , and number of observations . 8. Instrumental values ; circumstances of telegraphic communication , i . e . , length of circuit ...
Page 11
... of two or three 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.
... of two or three 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.
Page 12
... night . From the experience of this season , and that of many others which I have undergone in former years in astronomical work , both on the plains and in the mountains , I am of the opinion that the best time of the year ( so far as ...
... night . From the experience of this season , and that of many others which I have undergone in former years in astronomical work , both on the plains and in the mountains , I am of the opinion that the best time of the year ( so far as ...
Page 13
... night of the 14th ) , was made by means of the chronograph , of the form contrived by Professor Harkness , United States Naval Observatory . It consists of clock - work driven by a weight , and can be adjusted to run some two hours ...
... night of the 14th ) , was made by means of the chronograph , of the form contrived by Professor Harkness , United States Naval Observatory . It consists of clock - work driven by a weight , and can be adjusted to run some two hours ...
Page 14
... nights of the 1st , 3d , 8th , 9th , 10th , 11th , and 12th were occupied on latitude , in which time 257 results were obtained . The 5th , 14th , 16th , 18th , 19th , and 21st were successively put in on longitude . There were several ...
... nights of the 1st , 3d , 8th , 9th , 10th , 11th , and 12th were occupied on latitude , in which time 257 results were obtained . The 5th , 14th , 16th , 18th , 19th , and 21st were successively put in on longitude . There were several ...
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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