Measurements of binary stars with coherent integration of NPOI data

Anders M. Jorgensen, H. Schmitt, R. Hindsley, J. T. Armstrong, T. A. Pauls, D. Mozurkewich, D. J. Hutter, C. Tycner

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations


In this paper we use coherently integrated visibilities (see separate paper in these proceedings1) to measure the properties of binary stars. We use only the phase of the complex visibility and not the amplitude. The reason for this is that amplitudes suffer from the calibration effect (the same for coherent and incoherent averages) and thus effectively provide lower accuracy measurements. We demonstrate that the baseline phase alone can be used to measure the separation, orientation and brightness ratio of a binary star, as a function of wavelength.

Original languageEnglish
Title of host publicationOptical and Infrared Interferometry
StatePublished - 2008
EventOptical and Infrared Interferometry - Marseille, France
Duration: Jun 23 2008Jun 27 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceOptical and Infrared Interferometry


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