High precision calibration of interferometric data through the removal of fixed-pattern residuals

Christopher Tycner, J. A. Benson, D. J. Hutter, H. R. Schmitt, R. T. Zavala

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

3 Scopus citations


We demonstrate a new calibration technique that can be applied to multi-spectral interferometric observations. The technique measures a fixed-pattern in squared visibility measurements across the spectral channels of each baseline. Because the fixed-pattern appears to be stable on time scales longer than one night, nightly or weekly averages can be calculated based on observations of calibrator stars. The averaged fixed-pattern values can then be removed from data of target stars. We demonstrate the performance of the calibration technique on actual observations obtained with the Navy Prototype Optical Interferometer and show that the fixed-pattern effects can be suppressed by up to an order of magnitude.

Original languageEnglish
Title of host publicationAdvances in Stellar Interferometry
StatePublished - 2006
EventAdvances in Stellar Interferometry - Orlando, FL, United States
Duration: May 25 2006May 30 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6268 II
ISSN (Print)0277-786X


ConferenceAdvances in Stellar Interferometry
Country/TerritoryUnited States
CityOrlando, FL


  • Calibration
  • Interferometric data


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