Globular cluster
NGC 6171 (NGC6171)
In Ophiuchus (Oph) • Magnitude 8.8 • 7.8 arcminutes
Open the free AstroPlanner with NGC 6171 pre-selected, scored against your telescope, location, and the live cloud forecast.
NGC 6171 is a globular cluster located in the constellation Ophiuchus, at right ascension 16h 32m 32s and declination -13° 03' 13".
NGC 6171 at a glance
| Catalog IDs | M107, N 6171 |
| Type | Globular cluster |
| Constellation | Ophiuchus (Oph) |
| Right ascension | 16h 32m 32s |
| Declination | -13° 03' 13" |
| Apparent magnitude | 8.80 |
| Surface brightness | 21.9 mag/arcsec² |
| Angular size | 7.8 × 7.8 arcmin |
| Max altitude at 45°N | 32° |
| Best imaging months | Feb, Mar, Apr |
How to image NGC 6171
NGC 6171 sits in the constellation Ophiuchus at right ascension 16h 32m 32s and declination -13° 03' 13". To frame and integrate it well, AstroPlanner will compute the optimal moonless window for tonight from your location, the field-of-view fit against your sensor and focal length, the suggested total integration time given your aperture and sky Bortle class, and a cloud-aware schedule that drops it from the plan if your nearest cloud forecast spike overlaps the best altitude window.