Antilhue - Chile
Antilhue - Chile
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| Designation | M 14, NGC 6402, Bennett 97 |
| Object type | Globular cluster |
| Coordinates | 17 h 38 min - 03° 15' Ophiuchus (Oph) |
| Description | Messier 14 is
a slightly elliptically shaped stellar swarm, about 100 light years across
and about 30.000 light years away. While its bright main body
measures only about 3 arc minutes in angular diameter, the cluster's
outlayers reach out to a total apparent diameter of 11.7 arc min. M
14's apparent visual brightness of 7.6 visual magnitudes corresponds to an
absolute magnitude of -9.12, or to a luminosity about 400,000 times that
of our sun. So while it is
apparently dimmer than the two other great Ophiuchus clusters M10
and M12 (an effect of its greater distance), it is intrinsically much more luminous.
The brightest stars of M14 are of about visual mag 14.0 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 48:20:20:20 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 (prime focus) |
| Mount | Astro-Physics AP1200GTO |
| Software | MaxIm DL/CCD, Sigma Pre Beta 11, Adobe Photoshop CS |
| Location - Date - Time | San Esteban (Chile) - 19Jul2006 @ 03:30 UTC |
| Conditions | Transparency 7/10, Seeing 5/10, Temperature + 15°C, wind |
