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 |