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Re: Extremely poor conditions, details.
From: Richard B. Langley
Date: 2012 Mar 21, 13:51 -0300
From: Richard B. Langley
Date: 2012 Mar 21, 13:51 -0300
I think it may have been mentioned on the list before but an excellent paper on astronomical refraction, including anomalous refraction, is the paper by Young: Title: Understanding astronomical refraction Authors: Young, A. T. Publication: The Observatory, Vol. 126, p. 82-115 (2006) Publication Date: 04/2006 Origin: OBS Bibliographic Code: 2006Obs...126...82Y It can be downloaded from the SAO/NASA ADS Astronomy Abstract Service: http://adsabs.harvard.edu/abs/2006Obs...126...82Y The paper: Title: Refraction near the horizon Authors: Schaefer, Bradley E.; Liller, William Affiliation: AA(NASA, Goddard Space Flight Center, Greenbelt, MD), AB(Ministerio de Educacion de Chile, Instituto Isaac Newton, Santiago) Publication: Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 102, July 1990, p. 796-805. (PASP Homepage) Publication Date: 07/1990 Category: Astronomy Origin: STI NASA/STI Keywords: ASTROMETRY, ATMOSPHERIC REFRACTION, SEXTANTS, TEMPERATURE PROFILES, ASTROPHYSICS, AZIMUTH, HORIZON, SOLAR ECLIPSES, SUNRISE DOI: 10.1086/132705 Bibliographic Code: 1990PASP..102..796S might also be of interest. It can also be download from the SAO/NASA ADS Astronomy Abstract Service: http://adsabs.harvard.edu/abs/1990PASP..102..796S -- Richard Langley On 21-Mar-12, at 12:57 PM, Alexandre E Eremenko wrote: > > Marcel, > >> The setting sun looks then like in the pictures shown >> here http://mintaka.sdsu.edu/GF/mirages/mirintro.html > > Unfortunately I did not pay attention at the setting Sun > (being occupied with Venus altitude). So I cannot say how it > looked. > > The record of the observations shows however that the coinditions > lasted several hours (at least 4), with roughtly the same errors, > including some time after the sunset. > > I still have to read the paper you refer to carefully. > > Next time I will carry a camera and fotograph the horizon > near the time of the altitude observation:-) > > Alex. > > > ----------------------------------------------------------------------------- | Richard B. Langley E-mail: lang@unb.ca | | Geodetic Research Laboratory Web: http://www.unb.ca/GGE/ | | Dept. of Geodesy and Geomatics Engineering Phone: +1 506 453-5142 | | University of New Brunswick Fax: +1 506 453-4943 | | Fredericton, N.B., Canada E3B 5A3 | | Fredericton? Where's that? See: http:// www.fredericton.ca/ | -----------------------------------------------------------------------------