Results 201 to 210 of about 14,635 (238)

Theodolite orientation and defining the meridian in field astronomy

Journal of Spatial Science, 1963
Summary Some methods of determining the orientation of the theodolite in field astronomy are discussed. A simple and precise method of defining the meridian, suitable for Laplace determinations, is outlined, and a nomogram is given for rapidly finding the altitude and azimuth of σ octantis.
G G Bennett
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Methods in meridian astronomy

New Astronomy Reviews, 1965
Abstract The article presents a description of old and new methods used in the reduction of meridian observations; it intends to give a systematic exposition of the bewildering variety of these methods, and includes modern procedures. Special topics discussed are the determination of instrumental errors, the derivation of systems of right ascensions ...
F Schmeidler
exaly   +3 more sources

Minor Planets in Meridian Astronomy

Publication of the Astronomical Society of Japan, 1966
Abstract Meridian observations of the four brightest minor planets with a transit circle give a method of investigating a fundamental catalogue in the sense of solving two important problems in Meridian Astronomy: one is to decide the equinox and equator with superior precision, and the other is to demonstrate the systematic deviation of
Haruo Yasuda
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Greenwich meridian astronomy

New Astronomy Reviews, 1985
R. H. Tucker
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Meridian astronomy in the private and university observatories of the United Kingdom: Rise and fall

New Astronomy Reviews, 1985
D. W. Dewhirst
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Precise astronomy on the Saskatchewan‐Alberta meridian boundary

Eos, Transactions American Geophysical Union, 1939
The demarcation of the northerly part of the Inter‐provincial Boundary between Saskatchewan and Alberta was carried out in 1938 by the Saskatchewan‐Alberta Boundary Commission. In connection with this work, a precise astronomical determination of position was made at the north end of the Boundary by the Geodetic Service of Canada.
Noel J. Ogilvie
openaire   +2 more sources

Reducing meridian circle observations in positional astronomy

Journal for the History of Astronomy, 2023
Jarosław Włodarczyk
openaire   +2 more sources

Prime meridians in medieval Islamic astronomy

Vistas in Astronomy, 1985
E.S. Kennedy, M.H. Regier
openaire   +2 more sources

Synchronising Paris in the Eighteenth Century? Henry Sully’s Meridian Line at Saint-Sulpice: Astronomy, Clockmaking, and Timekeeping

Georges Louis
openaire   +2 more sources