Introduction to Interferometry

Details Introduction to Interferometry Introduction to Interferometry

1996-09-12

arxiv.org/abs/astro-ph/9609092v1

ESO Workshop on Science with the VLT Interferometer, edited by F. Paresce (1997) 3

Astronomy and Astrophysics

Astrophysics

10 LaTeX pages, 5 Postscript figures, style file included. Invited talk to be published in proceedings of ESO Workshop on "Sci

Scientific paper

This tutorial gives a general introduction to optical and infrared interferometry, specifically addressing two questions: `Can I use VLTI to observe my favourite object?' and `What will it tell me?' The observables measured by an interferometer are fringe visibility and closure phase, which can then be fitted by a model or used to reconstruct an image. In order to measure fringes, the path lengths from the source to the detector via the different individual apertures must be equalized. This requires some form of fringe tracking, which constrains the type of observations that are feasible and has important implications for the complexity and size of the resulting image.

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