Visual Target Tuner
The Visual Target Tuner ((VTT) is a graphical tool created by the Scientist's Expert Assistant (SEA) project. This tool allows users to search image databases for star fields, manipulate the images, and overlay them with HST apertures. This provides a graphical means for defining targets for observations.
More information about the VTT and SEA are available at the following locations:
Scientist's Expert Assistant Home Page
Scientist's Expert Assistant at STScI