Influence of instrumental noise and defocus on the DIMM

Z. Benkhaldoun; Y. Hach

doi:10.1117/12.789227

9 July 2008 Influence of instrumental noise and defocus on the DIMM

Z. Benkhaldoun, Y. Hach

Proceedings Volume 7014, Ground-based and Airborne Instrumentation for Astronomy II; 70147D (2008) https://doi.org/10.1117/12.789227
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

The instrumental noise is an important factor in any measurement. In order to evaluate the amount of seeing introduced by the instrumental noise, we have conducted an experiment using an artificial light source as a star. In addition, we present a study of the defocus effect on the DIMM results. The instrumental noise variance was measured in the laboratory for different states of defocusing. In this paper we will present the results of these various experiments.

Citation Download Citation

Z. Benkhaldoun and Y. Hach "Influence of instrumental noise and defocus on the DIMM", Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70147D (9 July 2008); https://doi.org/10.1117/12.789227

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