Open cluster
Double Cluster (Chi Persei) (NGC884)
In Perseus (Per) • Magnitude 3.8 • 11 arcminutes
Open the free AstroPlanner with Double Cluster (Chi Persei) pre-selected, scored against your telescope, location, and the live cloud forecast.
Eastern half of the Perseus Double Cluster.
Double Cluster (Chi Persei) at a glance
| Catalog IDs | N 884 |
| Type | Open cluster |
| Constellation | Perseus (Per) |
| Right ascension | 02h 22m 32s |
| Declination | +57° 08' 39" |
| Apparent magnitude | 3.80 |
| Angular size | 10.5 × 10.5 arcmin |
| Max altitude at 45°N | 78° |
| Best imaging months | Sep, Oct, Nov, Dec, Jan |
How to image Double Cluster (Chi Persei)
Double Cluster (Chi Persei) sits in the constellation Perseus at right ascension 02h 22m 32s and declination +57° 08' 39". 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.