Create Star Charts. SKY can generate a graph showing the location of cataloged stars in the vicinity of your target within a selected range of V magnitudes. Create finder charts using DSS images. Search for guide stars. SKY can use its built-in interface to the HST Guide Star Catalog to locate potential guide stars for a given target.
Compute position angles.
SKY can be used to determine the position angle setting needed to acquire a particular guide star. Complete instructions for carrying out these procedures are given below. From the window manager's pulldown menu, select the Keck menu option. After a few seconds, the SKY main window should appear on your terminal. Click on the File button in the upper left corner of the main SKY window.