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 3
... details 49 Meteorological conditions 50 Description of observatory 50 Description of instruments used 51 Points of connection . 52 Tabulation of stars used for time 53 Corrections and rates of chronometers 64 Signals for determination ...
... details 49 Meteorological conditions 50 Description of observatory 50 Description of instruments used 51 Points of connection . 52 Tabulation of stars used for time 53 Corrections and rates of chronometers 64 Signals for determination ...
Page 7
... details ; especially all physical peculiarities . 3. Meteorological conditions ... observatory ; including personnel of party , name of telegraph- operator , and name of telegraph - company whose wire has been employed . 5. Description ...
... details ; especially all physical peculiarities . 3. Meteorological conditions ... observatory ; including personnel of party , name of telegraph- operator , and name of telegraph - company whose wire has been employed . 5. Description ...
Page 12
... DESCRIPTION OF OBSERVATORY . A large wall - tent drawn over a framework formed the observatory . The open- ing for the meridian - line was furnished with a flap and curtains ; the former served to protect the instrument from the weather ...
... DESCRIPTION OF OBSERVATORY . A large wall - tent drawn over a framework formed the observatory . The open- ing for the meridian - line was furnished with a flap and curtains ; the former served to protect the instrument from the weather ...
Page 13
... DESCRIPTION OF INSTRUMENTS USED . ( a . ) Transit . The transit used was the meridian - zenith - instrument No. 28 ... Observatory . It consists of clock - work driven by a weight , and can be adjusted to run some two hours . The ...
... DESCRIPTION OF INSTRUMENTS USED . ( a . ) Transit . The transit used was the meridian - zenith - instrument No. 28 ... Observatory . It consists of clock - work driven by a weight , and can be adjusted to run some two hours . The ...
Page 50
... DESCRIPTION OF OBSERVATORY AT COLORADO SPRINGS , COLORADO TERRITORY . As soon as the monument was built , a solid framework , 8 by 10 feet , was con- structed , and a large wall - tent put over it . There was an opening in the tent ...
... DESCRIPTION OF OBSERVATORY AT COLORADO SPRINGS , COLORADO TERRITORY . As soon as the monument was built , a solid framework , 8 by 10 feet , was con- structed , and a large wall - tent put over it . There was an opening in the tent ...
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Common terms and phrases
12-Year Cat 24h local sidereal 30m local sidereal 38 Cassiopeiæ 50 Draconis 61 Cygni 9 Draconis Andromedæ Aquilæ August bB aA CC Capricorni Ceti Cheyenne chron chronograph chronom Clamp Cloudy all day Colo Colorado Springs chronometer COLORADO TERRITORY Computations for Latitude Date Delphini Draconis 22 eter final result Groom Groombridge 3241 Groombridge 4163 Half-sum of dec HARVARD COLLEGE OBSERVATORY July 31 Latitude of Cheyenne LATITUDE-OBSERVATIONS-Continued Level linations longitude Mean at 24h Mean for 17h Microm Micrometer star Name of Star nights Normal Equations Number Half-sum Observations for Latitude October 14 October 16 Ophiuchi Pegasi Piscium probable error REDUCTION Remarks Right Ascension Sagittarii Salt Lake chron SALT LAKE CITY SALT LAKE OBSERVATORY Springs chron ẞ Aquarii ẞ Cephei ẞ Lyræ TABLES OF TIME-REDUCTIONS Tabulation of Stars TIME-REDUCTIONS AT RECEIVING-STATION-Continued UNIFORM TABLES Ursæ Minoris UTAH TERRITORY wires Wyoming Territory δε ΔΤ
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.