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Irradiation: A Note

Published online by Cambridge University Press:  18 January 2010

Charles H. Cotter
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It is some considerable time since the questions associated with irradiation were considered in the pages of the Journal. Indeed the interesting and practical paper by Captain Brett Hilder is the latest considerable contribution to the Journal and this appeared no less than twenty years ago. It is only in comparatively recent times that nautical astronomers have been provided with an authoritative irradiation correction of any sort. This, which applies only to observations of the Sun's upper limb, was incorporated in the altitude correction table for the Sun and appeared annually in the Nautical Almanac after 1953, the year of Hilder's paper, but was discontinued after 1969.

Type
Forum
Information
The Journal of Navigation , Volume 27 , Issue 2 , April 1974 , pp. 261 - 265
Copyright
Copyright © The Royal Institute of Navigation 1974

References

REFERENCES

Hilder, B. (1953). Refraction at sea. This journal, 6, No. 3.Google Scholar
Clemence, G. M. (1951). Refraction near the horizon. Navigation, Los Angeles. Vol. 3.Google Scholar
Haines, R. F. and Allen, W. H. (1968). Irradiation and the manual navigation. Navigation, Washington, Vol. 15.Google Scholar
Raper, H. (1857). The Tractice of Navigation and Nautical Astronomy. London.Google Scholar
Martin, W. R. (1888). A Treatise on Navigation and Nautical Astronomy. London.Google Scholar
Lecky, S. T. L. (1884). Wrinkles in Practical Navigation. 2nd Edition. London.Google Scholar