Spatial filtering using pinholes at COAST

David Saint-Jacques; John E. Baldwin; Roger C. Boysen; Christopher A. Haniff; Peter R. Lawson; John Rogers; Peter J. Warner; Donald M. A. Wilson; John S. Young

doi:10.1117/12.317143

24 July 1998 Spatial filtering using pinholes at COAST

David Saint-Jacques, John E. Baldwin, Roger C. Boysen, Christopher A. Haniff, Peter R. Lawson, John Rogers, Peter J. Warner, Donald M. A. Wilson, John S. Young

Author Affiliations +

Proceedings Volume 3350, Astronomical Interferometry; (1998) https://doi.org/10.1117/12.317143
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

Visibility measurements obtained with optical astronomical interferometers are corrupted by random wavefront distortions of atmospheric origin. In this paper we discus how spatial filtering using pinholes can lead to increased measured visibility, improved signal-to-noise ratio and reduced dependence on seeing fluctuations. The potential for calibrating visibility measurements without resorting to a separate calibrator target is also discussed. Results of preliminary pinhole experiments carried out with the Cambridge Optical Aperture Synthesis Telescope are presented.

Citation Download Citation

David Saint-Jacques, John E. Baldwin, Roger C. Boysen, Christopher A. Haniff, Peter R. Lawson, John Rogers, Peter J. Warner, Donald M. A. Wilson, and John S. Young "Spatial filtering using pinholes at COAST", Proc. SPIE 3350, Astronomical Interferometry, (24 July 1998); https://doi.org/10.1117/12.317143

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