in Pegasus" 11/11/99 Kitt Peak, Arizona
(Image by Adam Block, Willis Greiner and Cheryl
Price. Copyright NOAO, all rights reserved.)
This CCD image was obtained using a 16" Meade Schmidt-Cassegrain
telescope operating at f/6.3. The camera used was a SBIG ST-8;
sky chart software was Software Bisque's The Sky, acquisition
and image manipulation software was Cyanogen's Maxim DL. Three
300-second exposures were taken and combined to form a raw
composite image. Dark and flat-field exposures were taken
and applied to the raw images. A maximum-entropy algorithm
was then applied to the combined data, resulting in the final
image shown here.
is a beautiful spiral galaxy thought to be similar to our
own. It is in a region of the sky that displays many galaxies;
look closely and note at least three other small associated
galaxies in this one photograph. Galaxies like NGC7331 are
separate "island universes" similar to but at great distances
from our own galaxy, the Milky Way. This galaxy is thought
to be about 50 million light years from us; this implies that
its light that we are now viewing left NGC7331 50 million
years ago, soon after the demise of the dinosaurs and 45 million
years before the first proto-human emerged to look skyward!
the image to view a larger version.