Antilhue - Chile

Messier 80
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Image Data

Designation M 80,  NGC 6093,  Bennett 73
Object type Globular cluster
Coordinates 16 h 17 min    - 22° 59'   Scorpius (Sco)
Description Messier 80 lies in a beautiful field with contrasting stars, about 4.5° NW of Antares (Alpha Scorpii).  Sometimes called "a poor cousin to M 4", it is quite different, being far more condensed and less reddened.  It shines at mag 7.2 and extends 8 arc minutes.  

Click on the image for a higher resolution version.  The field of view is  37 x 25 arcminutes with north towards the lower right.

Exposure NRGB 48:20:20:20 min @ -20°C ;  all exposures unbinned, no filter on luminance
Camera SBIG STL-11000 with Astronomik Type 2 RGB filterset  -  selfguided
Optics RCOS 14.5" Ritchey-Chrétien @ f/9 (prime focus)
Mount Astro-Physics AP1200GTO
Software MaxIm DL/CCD,  Adobe Photoshop CS
Location - Date - Time San Esteban (Chile) - 24Apr2006 @ 05:30 UTC
Conditions Transparency 8/10,  Seeing 6/10, Temperature  + 14°C