Anomalous Refraction Studies with the SDSS

Details Anomalous Refraction Studies with the SDSS Anomalous Refraction Studies with the SDSS

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.4405p&link_type=abstract

American Astronomical Society, 194th AAS Meeting, #44.05; Bulletin of the American Astronomical Society, Vol. 31, p.884

Astronomy and Astrophysics

Astronomy

Scientific paper

Astrometric residuals from engineering scans with the SDSS 2.5M telescope and imaging camera show quasi-periodic behavior with typical periods of from a few to 20 minutes and semi-amplitudes of from 0.05 to over 0.20 arcsec. Such behavior has been seen before in a number of studies and has been attributed to atmospheric phenomena termed ``anomalous refraction." The unique design of the Sloan camera reveals, for the first time, that anomalous refraction is spatially coherent on scales exceeding two degrees.

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