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              ![]()  | 
            
| This huge comet-like object
                  is starting from the molecular cloud of Corona
                  Australis. The "head" is near the IC 4812 and NGC 6726
                  blue nebulae, and the "tail" bends toward East and
                  then North. | 
              The upper-right corner of the
                  image shows a bright yellow halo. This is not an image
                  defect! It's the zodiacal light, bright even at more
                  than 90° from the Sun. (Milky Way center was at
                  zenith when the astronomical night was beginning). | 
            
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              ![]()  | 
            
| The "dark horse" nebula is
                  easily visible: on the left the "pipe" nebula is the
                  rear of the horse, while on the left two legs and the
                  head are visible. | 
              The regions nearby Antares
                  are full of great diffuse nebulae of many colors: red,
                  yellow, orange, blue, brown. Moreover the extension of
                  the front leg of the dark horse is a very long dark
                  nebula that reaches Antares. | 
            
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              ![]()  | 
            
| The galactic center lies in this field, near the border between the brightest region and the dark band above. On the left M8 and M20 nebulae; on the right M6 and M7 clusters. | The tail of Scorpio is home
                  for many bright emission nebulae. From the left the
                  two cat's paws; near the center Zeta Scorpii and IC
                  4628; on the right Ara  and NGC 6188. | 
            
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| Optics | Canon lens 50 mm f/1.8 mkII | 
          
| Focal Length | 50 mm | 
          
| Focal Ratio | f/4 | 
          
| Exposure Time | 7h10m
                    (single exp of 10 min, mosaic of 7 panes, each pane is 1 h exp) | 
          
| CCD | Canon
                    EOS 5D with Baader filter | 
          
| Sensitivity | 800 ISO | 
          
| Location | Tivoli Farm
                    (Namibia) at 1350 m height | 
          
| Date | 
            24-25-26-27-28 August 2011 | 
          
| Mount | Losmandy G11 | 
          
| Tracking | none | 
          
| Temperature and humidity | T= from +3 to +15°C, RH=from 20 to 40% | 
          
| Sky brightness at zenith (with SQM-L) | from 21.5 to 21.9 mag/arcsec^2
                (bright because of the Milky Way at zenith!) | 
          
| Notes | This 
image is a collaborative effort of the Namibia 2011 expedition. 
Processing: Lorenzo Comolli. Images by: Lorenzo Comolli, Luigi Fontana, 
Giosuè Ghioldi, Emmanuele Sordini. | 
          
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