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About this Image
The globular cluster NGC 5139 in Centaurus is the most massive star cluster with approx. 5 million suns.
It is situated approx. 16,000 light-years away. As there are only few foreground stars situated there, most of the stars in this image belong to this huge cluster.
105mm TMB refractor with flattener at f/6.5
|Camera||SBIG STL-11000M at -25C, internal filter wheel|
|Date||Aug 07, 2004.|
|Sky Conditions||mag 6.5, high transparency, temperature 10 C,|
LRGB= 15:15:15:15 min (5-minute sub-exposures)
Image aquisition in Maxim DL 4.0; Image calibration, aligning, mean stacking, DDP and color synthesis in ImagesPlus;
Photoshop: curves, color balance, cropped;