Antilhue - Chile

NGC 5897
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Image Data

Designation NGC 5897,  Bennett 68
Object type Globular cluster
Coordinates 15 h 17 min    - 21° 01'   Libra (Lib)
Description Dreyer, author of the NGC catalog, describes NGC 5897 as fairly faint,  large, very irregularly round and brightening only very gradually toward the middle.  He also said it was quite resolvable, and indeed it shows a remarkable absence of the dense nucleus so common to most globular clusters.  NGC 8597 shines at mag 8.6, extends 12 arc minutes and lies about 45.000 light years away.  

Click on the image for a higher resolution version.  The field of view is  37 x 25 arcminutes with north towards the top (15°).

Exposure NRGB 48:16:16:16 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  with RCOS field flattener
Mount Astro-Physics AP1200GTO
Software MaxIm DL/CCD,  Adobe Photoshop CS
Location - Date - Time San Esteban (Chile) - 22Apr2006 @ 04:30 UTC
Conditions Transparency 6/10,  Seeing 6/10, Temperature  + 14°C