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Low-Altitude Astro Sights

Published online by Cambridge University Press:  18 January 2010

P. L. Nightingale
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On 13 flights at different heights and outside air temperatures a total of 127 low-altitude sights were taken of the Sun, Moon and planets. The sights were taken with a Kollsman periscopic sextant which uses an illuminated graticule as a datum. Hughes' Tables were used for the calculations and the corrections for refraction taken from the table published in Navigation.

Type
Forum
Information
The Journal of Navigation , Volume 7 , Issue 1 , January 1954 , pp. 84 - 88
Copyright
Copyright © The Royal Institute of Navigation 1954

References

REFERENCES

1Willems, R. C. (1951). Low altitude refraction correction. Navigation, Los Angeles, 3. 41.Google Scholar
2Hagger, A. J. (1952). The accuracy of bubble sextant observation. This Journal, 5, 380.Google Scholar