STScI Logo

Hubble Space Telescope
FOC Software Tools

FOC Exposure Time Simulator (FOCSIM)

This FOC simulator provides information about the expected count rate and ideal exposure time to reach a given S/N for FOC images based on the latest calibration information. Please note that this software tool is no longer supported by STScI.

Image Orientation Calculator

This form has been created to assist in the determination of image orientations. The tool not only provides numerical results, but a PostScript plot of the image format with the North and U3 vectors included.