... Table of Contents - Index . Cover Illustration: . This figure, pertaining to the paper by Markus Dolensky, Alberto Micol, Benoit Pirenne and Michael Rosa , shows the ``HST Jitter Ball" visualized by a Java applet. ... This information can be used to combine images in an optimal way and with minimum loss of resolution using the ``drizzling" technique described at the last ADASS and used for combining the images of the Hubble Deep Field. ...