Some Advantages and Disadvantages of a Photographic Zenith Tube View Full Text


Ontology type: schema:Chapter     


Chapter Info

DATE

1979

AUTHORS

Dennis D. McCarthy

ABSTRACT

The theory and instrumentation of a photographic zenith tube (PZT) have been described by various authors (Torao, 1959; Markowitz, 1960; Thomas, 1964; Schuler, 1968; Takagi, 1974). Analysis of the more recent results of the PZT’s of the U. S. Naval Observatory at Washington, D. C. and Richmond, Florida, permit the determination of precision and accuracy estimates which may be expected from the daily operation of a PZT. This analysis shows precisions of ±0.″03 in latitude and ±0.S003 in time, determined from the internal error of one sight. Accuracies estimated from the external error of a sight were found to be ±0.″.08 in latitude and ±0.S006 in time. More... »

PAGES

65-66

Book

TITLE

Time and the Earth’s Rotation

ISBN

978-90-277-0893-9
978-94-009-9368-6

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/978-94-009-9368-6_12

DOI

http://dx.doi.org/10.1007/978-94-009-9368-6_12

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1009684850


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