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Proceedings Paper

Calibration of nonspatially filtered data in optical interferometry
Author(s): Michael J. Ireland
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Paper Abstract

Several existing interferometers have taken large V2 data sets without the use of spatial filters. The calibration of this kind of data is always seeing and alignment-dependent, and can result in significant systematic errors if several ideal calibrators are not available. I will demonstrate how high-precision unbiased estimates of V2 can still be retrieved from this kind of data by using one of several simple seeing corrections. In particular, I will demonstrate the success of these techniques on data sets from the SUSI interferometer and non-redundant masking experiments, and also discuss their limitations. One of the techniques described can also aid in the calibration of low S/N spatially-filtered data.

Paper Details

Date Published: 27 June 2006
PDF: 10 pages
Proc. SPIE 6268, Advances in Stellar Interferometry, 62680A (27 June 2006); doi: 10.1117/12.670951
Show Author Affiliations
Michael J. Ireland, California Institute of Technology (United States)


Published in SPIE Proceedings Vol. 6268:
Advances in Stellar Interferometry
John D. Monnier; Markus Schöller; William C. Danchi, Editor(s)

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