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Refraction near the horizonVariations in astronomical refraction near the horizon are examined. Sunset timings, a sextant mounted on a tripod, and a temperature profile are utilized to derive the variations in refraction data, collected from 7 locations. It is determined that the refraction ranges from 0.234 to 1.678 deg with an rms deviation of 0.16, and it is observed that the variation is larger than previously supposed. Some applications for the variation of refraction value are discussed.
Document ID
19900056607
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Schaefer, Bradley E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Liller, William
(Ministerio de Educacion de Chile Instituto Isaac Newton, Santiago, United States)
Date Acquired
August 14, 2013
Publication Date
July 1, 1990
Publication Information
Publication: Astronomical Society of the Pacific, Publications
Volume: 102
ISSN: 0004-6280
Subject Category
Astronomy
Accession Number
90A43662
Distribution Limits
Public
Copyright
Other

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