|A mosaic of NGC 4372 and a part of the dark and and
molecular cloud Sandqvist 149 (CG 21) in the constellation Musca
the "Dark Doodad" nebula, is a dark nebula near
the globular cluster NGC 4372 in the constellation Fly (Musca). "Dark Doodad"
can best be translated into German as "Das dunkel Ding". It is part of the
large Musca molecular cloud, a region consisting of dense gas and dust that is
filamentary in structure. The dark cloud region is not all that makes up the
cloud, however. Both to the north and to the south (into the constellation
Chameleon) bright continuations are found in the form of reflection nebulae.
Sandqvist 149 is also cataloged as CG 21.
The whole dark cloud
shows the wide-angle image from the online star atlas
ALADIN, inverted and extremely enhanced in contrast.
At a distance of
between 500 to 700 light-years, it is one of the closest star-forming regions
to the solar system. The apparent longitude of the cloud is 3 degrees, roughly
equivalent to 30 light-years The nebula was cataloged in 1977 by Aage
Sandqvist, an astronomer at the Stockholm Observatory.
The name "Dark
Doodad" was given by American amateur astronomer and Sky & Telescope editor
Dennis di Cicco. Sandqvist created a list of 95 dark nebulae of the southern
sky according to the ESO B Atlas. In the SIMBAD database the nebula can also be
found under the designation Sandqvist 149.
more information see here..
||NGC 4372 is a large globular
cluster with an apparent diameter of just under 20 arcminutes. It is classified
as Type XII and has a distance of just under 19 000 light years from the solar
system, which corresponds to a real diameter of about 100 light years. NGC 4372
is unique because, unlike most globular clusters in the halo of our galaxy, it
contains only one stellar population, which is also very
The stars in NGC 4372
appear in a distinct yellow color compared to other globular clusters. The
reason for this is an absorption by interstellar matter (clearly visible in our
image), which stands between the solar system and the globular cluster. The
absorption is on average 1.2 magnitudes and produces a distinct reddening of
the stars in NGC 4372. The brightest stars of the cluster - red giants - reach
a visual brightness between 12.5 to magnitude class.
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|All Images und all Content are ©
by Franz Hofmann + Wolfgang Paech