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This photo shows one of the most beautiful open star clusters  of the southern sky  - NGC 4755.  It is an extremely brilliant and famous object when viewed through a binocular or a telescope. The orange star is DU Crucis and a red supergiant, strongly contrasting with the other bright members which are blue supergiants. The counterpart in the northern sky ist the brilliant open star cluster NGC 457.  | 
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| Mount | 
      German Equatorial Mount | RA / DE | 
      12 53 37  /  -60 21 23 | 
    
| Telescope | 20" Cassegrain f/3 (1500 mm) | Size  | 
      10'   | 
    
| Camera | Moravian G2 8300 mono | 
      Object Class | I 3 r | 
| Filter | Astrodon LRGB 1,25'' | Stars | > 100 | 
| Exposure | L 30x30s  R/G/B  à 7 x 60s  | 
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| Total | 
      36min | 
     Links | 
       WEBDA | 
    
| Software | 
      PixInsight | 
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| Location | 
      IAS Hakos Farm, Namibia | ||