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| Catalogue and alternative designations | NGC
6445, Box nebula
|
| Type | Planetary Nebula |
| Position | 17 49 15, -20 00 35 |
| Constellation | Sagittarius |
| Camera and Telescope | STLXL6303E and 36.8 cm Ritchey Chretien |
| Focal Ratio | F9 |
| Exposure Details | HaOIIIOIIILRGB with Hydrogen alpha = 120 minutes, Oxygen III = 100 minutes, L = 80 minutes, Red = 60 minutes and Green = Blue = 50 minutes. |
| Description | NGC
6445 is reasonably prominent at
magnitude 11.2 and closely
adjacent to the globular cluster
NGC 6440. It is a bipolar
planetary nebula with much
filamentary structure. The
apparent dimensions are given as
.53 x .53 arcminutes although
the filaments extend out much
further to about 1.8 arcminutes.
The distance is estimated to be
slightly more than 1000 parsecs.
|