The General Introduction contains information on the exercises themselves, on the Hubble Space Telescope, and on the ESO Very Large Telescope.
We offer the General Introduction as a pdf-file for screen-viewing or printing. For teachers who would like to use the individual images from the exercise, we have posted those below. There is a choice between different resolutions.
To get a printed version or a CD-ROM with PDF-files and images, please contact one of the