version of this image is
about 41 Megapixels and has a resolution of about
1 arc-second per pixel. The
area of sky shown here is about 1,7° x
comparison, the full-Moon disc has an average diameter of about 0,5°).
The color composite has been completed on May 20,
The full-resolution image
can generally be obtained. Typical applications are reproduction in books,
magazines and periodicals,
use for public exhibitions in planetariums, museums, talks, etc.
If interested, please read my policy
or e-mail me
with your request.
Davide De Martin.
composite image is based on data coming from several photographic plates taken between
1989 and 1991 through the
Palomar Observatory's 48-inch (1,2-meter)
Samuel Oschin Telescope as a part of the second National
Geographic Palomar Observatory Sky Survey (POSS II).
photographs were recorded on two type of
glass photographic plates - one sensitive to red light
and the other to blue - that later were digitized.