QUESTION: How are the pictures going to be used in later missions?

ANSWER: from Peter Stockman on March 28, 1996:
I'm not sure which pictures you mean. In general, Hubble pictures are
uniquely detailed and are extremely valuable in terms of deciding what
new science observations may be profitable/interesting and what we need to
surpass even Hubble performance.

I am studying one new mission, the so-called Next Generation Space
Telescope(NGST). That telescope will have a larger aperture than Hubble
(perhaps 2-3x larger) but will work in the near infrared (at wavelengths just
beyond those we can see with our eyes.)  Because the wavelengths are
longer, the imaging capability of the NGST will be very similar to that of HST.
So we use the HST deep field images to understand what distant galaxies will
look like -- how big they will appear and whether we can see structure in them.
Many astronomers used to argue that distant galaxies would appear so large that
we didn't need the resolution of Hubble to understand them.  We now know that
isn't true.  Most of the distant galaxies we see are barely resolved by
Hubble or have distinct patches of star formation.  So it is important to
maintain the same acuity as Hubble in the new missions.