Azimuth from Observations of Close Circumpolar Stars

Auteurs-es

  • J. C. Bhattacharji Survey of India

Résumé

In this paper suggestions have been made to modify considerably the existing time-azimuth and altitude-azimuth formulae to obtain more easily and quickly the first-order and second-order azimuths from observations of close circumpolar stars using lesser numbers of figures in both logarithmic and machine computations with the help of some small correction tables only. A simple chart has also been designed in order to read immediately from the chart third-order or less precise azimuths from observations of the above stars without recourse to elaborate computations. First-order azimuths are used in geodetic surveys while second-order and third-order azimuths have ample applications in topographic and hydrographic surveys including navigation.

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Publié-e

2018-04-11

Comment citer

Bhattacharji, J. C. (2018). Azimuth from Observations of Close Circumpolar Stars. The International Hydrographic Review, (1). Consulté à l’adresse https://journals.lib.unb.ca/index.php/ihr/article/view/26592

Numéro

1959: Vol. XXXVI, No. 1

Rubrique

Contents

Licence

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 Anders, F.J. and Byrnes, M.R.(1991). “Accuracy of shoreline change rates as determined from maps and aerial photographs”, Shore and Beach, 59, pp. 17-26.

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Foley, J.D., van Dam, A., Feiner, S. K. and Hughes, J.F. (1990), Computer Graphics – Principles and Practice, 2nd ed., Addison-Wesley, Reading, MA.

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Smith, A. (1988). Colour photomapping. Report NRC-01-512. National Research Centre. Ottawa, Canada.

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desJardins, M. (2005). How to succeed in postgraduate  study, Applied Ecology Research Group, University of Canberra, viewed 26 April 2009, http://aerg.canberra.edu.au/jardins.t.htm.

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