Antilhue - Chile

NGC 6440 in Sagittarius
Home Clusters Galaxies Nebulae Solar System Bennett Catalogue Published images



Image Data                                  

Designation NGC 6440,  Bennett 98a
Object type Globular cluster
Coordinates 17 h 49 min    - 20° 22'   Sagittarius  (Sgr)
Description Although relatively near to the Sun at 20 000 light years, this globular cluster shines through about 4 magnitudes of interstellar absorption, so that it appears small and obscure in the Sagittarius star clouds.  It sits 2.3° south-west of M 23 and 4.1° north-west of M 20 (the Trifid Nebula). 

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

Exposure NRGB 48:16:16:16 min @ -25°C ;  all exposures 4 min 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,  PixInsight V.1,  Adobe Photoshop CS
Location - Date - Time San Esteban (Chile) - 05Jun2005 @ 04:00 UTC
Conditions Transparency 8/10,  Seeing 5/10, Temperature  + 10°C