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Proceedings Paper

Calibration techniques for next-generation astronomical systems
Author(s): S. Slater; C. W. Stubbs; J. L. Tonry; J. R. Masiero; R. C. Smith
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Paper Abstract

Historically, few astronomical measurements have required sub-percent accuracy in photometry. Measuring SNIa fluxes in order to determine cosmological parameters, however, often requires the comparison of images from different telescopes, and at different redshifts. This can introduce a myriad of sources of error. Conventional methods of data reduction are intrinsically flawed, either making assumptions about the effects of wavelength dependence in the response function of the system or, when K-corrections are not performed, neglecting them altogether. We consider the advantages of a method utilizing a direct, spectrally-resolved measurement of the entire system's response function relative to a calibrated photodiode.

Paper Details

Date Published: 29 June 2006
PDF: 8 pages
Proc. SPIE 6269, Ground-based and Airborne Instrumentation for Astronomy, 626921 (29 June 2006); doi: 10.1117/12.670144
Show Author Affiliations
S. Slater, Harvard Univ. (United States)
C. W. Stubbs, Harvard Univ. (United States)
J. L. Tonry, Institute for Astronomy, Univ. of Hawaii (United States)
J. R. Masiero, Institute for Astronomy, Univ. of Hawaii (United States)
R. C. Smith, Cerro Tololo Inter-American Observatory (Chile)

Published in SPIE Proceedings Vol. 6269:
Ground-based and Airborne Instrumentation for Astronomy
Ian S. McLean; Masanori Iye, Editor(s)

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