This document describes the visibility data reduction for the Keck Interferometer. Raw interferometer data (called Level 0) is processed into reduced, time-averaged visibility data (called Level 1) by a software package called Kvis. This manual details the algorithms used and the inputs and outputs of the program. Kvis is run on all KI visibility science data as part of the standard pipeline processing and the reduced visibilities are made available to the users, so the general user will not need to run Kvis directly. A visibility data reduction guide for the science user is also available ( http://msc.caltech.edu/KISupport/v2/V2reductionGuide.pdf).
Kvis is written and maintained by the Michelson Science Center in Pasadena. This manual can be obtained at http://msc.caltech.edu/software/Kvis/Kvis.html in either pdf or html.
It is not the purpose of this document to introduce the reader to the basic concepts of optical interferometry. The reader is referred to section 9 for a list of references. Section 2 will cover just the concepts and data types necessary to understand the visibility processing performed by Kvis. Users familiar with these concepts, particularly those who have used the Palomar Testbed Interferometer (PTI), can probably skip to section 3 which describes how to run Kvis. This document also contains information on the various Kvis modes and some details of the program organization.
This version of the manual applies to Kvis version 1.1. The Kvis version is included in the Level 1 .info file (Sec. 2.1).