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NGC 6356 - A Globular Cluster in the constellaion
Ophiuchus |
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Short objekt description:
Northeast of Messier 9 is the globular cluster
NGC 6356. It is slightly smaller in diameter but
of nearly the same apparent magnitude. The core area is extremely concentrated,
it is assigned to class II according to Shapley.
Therefore our image shows - as
with M 9 - a HDR composite of 2 series of shorter (core) and longer
exposure times (outer area).
The
distance of NGC 6356 to the solar system is a " impressive " 50,000 light
years, making it one of the most distant globular clusters accessible to the
amateur photographer with a moderate telescope aperture. Its true diameter is
given as about 50 light-years. NGC 6357 was discovered by Friedrich Wilhem
Herschel on 17 June 1784.
Close
by - southwest of NGC 6356 - is another brighter globular cluster, Messier 9,
of which we show an image
here. With a focal length of 850 mm and the APSC sensor of the camera, the
fields of view the fields of view overlap, so that we can show both globular
clusters below as a mosaic of 2. Here the distribution of the dark clouds is
particularly clear. |
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higher resolution (2000 x 1500 Pixel 4000 x 2600 Pixel) |
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All Images and all Content are ©
by Franz Hofmann + Wolfgang Paech |