Calibration of nonspatially filtered data in optical interferometry

Michael J. Ireland

doi:10.1117/12.670951

27 June 2006 Calibration of nonspatially filtered data in optical interferometry

Michael J. Ireland

Proceedings Volume 6268, Advances in Stellar Interferometry; 62680A (2006) https://doi.org/10.1117/12.670951
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

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.

Citation Download Citation

Michael J. Ireland "Calibration of nonspatially filtered data in optical interferometry", Proc. SPIE 6268, Advances in Stellar Interferometry, 62680A (27 June 2006); https://doi.org/10.1117/12.670951

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