Designation |
NGC 6397, Bennett 98,
Caldwell 86 |
Object type |
Globular cluster |
Coordinates |
17 h 41 min -
53° 40' Ara (Ara) |
Description |
This is a bright globular,
faintly visible to the unaided eye under a dark sky. It's also one of the
best clusters for small telescope because it contains stars of mag
10. At about 6500 light years NGC 6397 is one of the nearest
to the sun, only M 4 is probably closer.
Click on the image for a higher resolution
version. The field of view is 37 x 25 arcminutes with north
towards the top.
|
Exposure |
LRGB 60:20:20:25 min @ -25°C
; all exposures 5 min unbinned |
Camera |
SBIG STL-11000 with Astronomik
Type 2 filterset - selfguided |
Optics |
RCOS 14.5" Ritchey-Chrétien
@ f/9
(prime focus) |
Mount |
Astro-Physics AP1200GTO |
Software |
MaxIm DL/CCD, Registar,
CCDSharp, PixInsight V.1, Adobe
Photoshop CS |
Location - Date - Time |
San Esteban (Chile) - 05Jun2005 @
06:00
UTC |
Conditions |
Transparency 8/10, Seeing 8/10, Temperature
+ 5°C |