Open cluster
Summer Beehive (IC4665)
In Ophiuchus (Oph) • Magnitude 4.2 • 25 arcminutes
Open the free AstroPlanner with Summer Beehive pre-selected, scored against your telescope, location, and the live cloud forecast.
Large open cluster in Ophiuchus.
Summer Beehive at a glance
| Catalog IDs | I 4665 |
| Type | Open cluster |
| Constellation | Ophiuchus (Oph) |
| Right ascension | 17h 46m 27s |
| Declination | +05° 38' 55" |
| Apparent magnitude | 4.20 |
| Angular size | 24.6 × 24.6 arcmin |
| Max altitude at 45°N | 51° |
| Best imaging months | Jun, Jul, Aug |
How to image Summer Beehive
Summer Beehive sits in the constellation Ophiuchus at right ascension 17h 46m 27s and declination +05° 38' 55". 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.