Dispersion Compensation and Fringe Tracking

  • P. R. Lawson
Part of the NATO Science Series C: (closed) book series (ASIC, volume 501)

Abstract

Stellar interferometers use delay lines to stabilize the location of white-light fringes, which would otherwise drift as a star moves across the sky. In principle a vacuum delay line should be used, but in practice many interferometers have used air delay lines. We examine the effects of dispersion and illustrate how it degrades our ability to track fringes

Keywords

Delay Line Dispersion Compensation Fringe Visibility Wideband Spectrum Visibility Amplitude 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Baldwin, J.E. et al. (1996) The first images from an optical aperture synthesis array: mapping of Capella with COAST at two epochs, Astron. Astrophys. 306, L13 – L16.ADSGoogle Scholar
  2. 2.
    ten Brummelaar, T.A. (1995) Differential path considerations in optical stellar inter- ferometry, Appl. Opt. 34, 2214 – 2219.ADSGoogle Scholar
  3. 3.
    Tango, W.J. (1990) Dispersion in stellar interferometry, Appl. Opt. 29, 516 – 521.ADSGoogle Scholar
  4. 4.
    Lawson, P.R. and Davis, J. (1996) Dispersion compensation in stellar interferometry, Appl. Opt. 35, 612 – 620.ADSGoogle Scholar
  5. 5.
    Burnett, J.G. et al. (1995) Balancing optical path lengths in broadband fiber interferometers, Appl. Opt. 34, 2194 – 2201.ADSGoogle Scholar

Copyright information

© Kluwer Academic Publishers 1997

Authors and Affiliations

  • P. R. Lawson
    • 1
  1. 1.Cavendish LaboratoryMRAOCambridgeUK

Personalised recommendations