Antilhue - Chile
Antilhue - Chile
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| 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 |
