| Title | The Ottawa photographic zenith telescope; and Method and formulae used in P.Z.T. plate measurement; and A program machine for automatic operation of the Ottawa P.Z.T. |
| Download | Downloads |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Thomson, M M; Tanner, R W; Hollinsworth, V E |
| Source | Publications of the Dominion Observatory, Ottawa vol. 15, no. 4, 1955, 40 pages, https://doi.org/10.4095/314491  Open Access |
| Image |  |
| Year | 1955 |
| Publisher | Canada Department of Mines and Technical Surveys |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| Related | This publication contains the following
publications |
| Related | This publication is contained in Publications of the
Dominion Observatory, Ottawa, volume XV |
| File format | pdf |
| Subjects | Science and Technology; Astronomy; Measurement; Automation |
| Illustrations | photographs; drawings; sketches; schematic representations; time series; tables |
| Released | 1955 01 01; 2019 09 20 |
| Abstract | The Ottawa photographie zenith telescope, utilizing a 10-inch objective of 14 feet focal length, was first tested in June 1951, and has been operated continuously since October 1951. More than 500
plates have been secured for the purpose of determining fundamental time and variation of latitude. Mean error of a clock correction from a single star is ± ! 027. Mean error of a latitude determination from a single star is ± 0''.29. A description
of the Ottawa instrument, methods used for reducing observations, and a discussion of results is presented. |
| GEOSCAN ID | 314491 |
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