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THE IMPORTANCE OF ATMOSPHERIC DIFFERENTIAL REFRACTION IN SPECTROPHOTOMETRY
ALEXEI V. FILIPPENKO
Publications of the Astronomical Society of the Pacific
Vol. 94, No. 560 (August 1982), pp. 715-721
Published by: Astronomical Society of the Pacific
Stable URL: http://www.jstor.org/stable/40678026
Page Count: 7
You can always find the topics here!Topics: Astronomical objects, Atmospherics, Position angle, Hour angle, Refraction, Wavelengths, Observatories, Zenith, Air masses, Meridian
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The effects of atmospheric differential refraction on astronomical measurements are much more important than is generally assumed. In particular, it is shown that relative line and continuum intensities in spectrophotometric work may be erroneous if this phenomenon is neglected. To help observers minimize these errors, the relation between object position and optimal slit or aperture orientation is derived, and practical tables and graphs are presented for use at the telescope.
Publications of the Astronomical Society of the Pacific © 1982 The University of Chicago Press