Open cluster
NGC 6791 (NGC6791)
In Lyra (Lyr) • Magnitude 9.5 • 6.3 arcminutes
Open the free AstroPlanner with NGC 6791 pre-selected, scored against your telescope, location, and the live cloud forecast.
Old open cluster in Lyra.
NGC 6791 at a glance
| Catalog IDs | N 6791 |
| Type | Open cluster |
| Constellation | Lyra (Lyr) |
| Right ascension | 19h 20m 53s |
| Declination | +37° 46' 19" |
| Apparent magnitude | 9.50 |
| Angular size | 6.3 × 6.3 arcmin |
| Max altitude at 45°N | 83° |
| Best imaging months | Jul, Aug, Sep |
How to image NGC 6791
NGC 6791 sits in the constellation Lyra at right ascension 19h 20m 53s and declination +37° 46' 19". 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.