Name: VMT Version: 2.0 Posted Date: 4/22/2009 OS: Unix/Linux/MacOSX Additional Info: http://nexsciweb.ipac.caltech.edu/vmt/vmtWeb Description: The Visibility Modeling Tool (VMT) is a software application developed by the NASA Exoplanet Science Institute (NExScI) to allow prospective or experienced users of optical interferometers to approximately model the interferometric observables for objects of interest using a simple interface. The VMT is a new component on NExScI's getCal suite of observation planning utilities. In addition to the downloadable version available here, the VMT can also be accessed as a web application online at http://nexsciweb.ipac.caltech.edu/vmt/vmtWeb Among its primary motivations, the VMT aims to support users of the Keck Interferometer (KI), and in particular the Nuller Key Science users. It should however be equally useful to users of any other ground-based interferometer. The VMT performs visibility amplitude (and null depth in the case of the KI) predictions, and thus will help astronomers primarily in the observation planning stage of their investigations. The VMT requires that JRE version 1.4 or higher is installed on your computer. The VMT is an executable jar file and runs on MacOSX, Linux and Windows platforms. To download: 1] Locate and click the "download" link next to VMT Tool 2] Then depending upon your platform: Mac: a) save the vmt-x.y.zip file to a desired location on your machine b) locate the zip folder on your machine, and extract it (double-click) c) locate the executable jar icon (vmt-x.y.jar) within the unzipped folder and double-click it. Windows: a) save the vmt-x.y.zip file to a desired location on your machine b) locate the zip folder on your machine, and extract it (right click->Extract All..) c) locate vmt-x.y.jar executable jar icon within the unzipped folder and double-click it. Linux: a) save the vmt-x.y.zip file to a desired location on your machine b) locate the zip folder on your machine, and extract it (double click to open, then click edit->extract) c) locate vmt-x.y.jar executable jar icon within the unzipped folder d) launch it from the command line: java -jar vmt-x.y.jar