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Ptolemy`s Cluster: This very conspicuous Open Cluster lies in one of the brightest parts of Milky Way, called the Large Sagittarius Cloud, close to the direction towards the galactic center. It shines bright against a field of stars of nearly unbelievable density. M7 which is its Messier designation, is known since ages and can be observed with the naked eye but especially well with a pair of binoculars.

The image was taken at the observatory of IAS at Hakos Farm in Namibia.

The image has been selected Astrophoto of the Day(APOD).

Object Ptolemy`s Cluster
Category IAS Hakos, Namibia
Designation M 007
Constellation Scorpius
Optics Keller 20 inch Cassegrain f/3 in corrected primary focus
Mount Liebscher GEM
Camera SBIG STL-11000M with internal CFW 5
Exposure 3 x 3min each RGB, Baader filterset. Maxim DL for image acquisition
Calibration Dark + Flat Frame
Guiding StarlightXpress Lodestar on Schneider OAG, Maxim DL as Guiding Software
Processing Maxim DL5, Photoshop. Color Code RGB
Location-Date IAS-Hakos, Namibia - 19 Apr 2012
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