Emission nebula
Prawn Nebula (IC4628)
In Scorpius (Sco) • Magnitude 99.0 • 1.5 degrees
Open the free AstroPlanner with Prawn Nebula pre-selected, scored against your telescope, location, and the live cloud forecast.
Large southern emission nebula in Scorpius.
Prawn Nebula at a glance
| Catalog IDs | I 4628 |
| Type | Emission nebula |
| Constellation | Scorpius (Sco) |
| Right ascension | 16h 56m 59s |
| Declination | -40° 27' 04" |
| Apparent magnitude | 99.00 |
| Angular size | 89.1 × 58.9 arcmin |
| Max altitude at 45°N | 5° |
| Best imaging months | May, Jun, Jul |
How to image Prawn Nebula
Prawn Nebula sits in the constellation Scorpius at right ascension 16h 56m 59s and declination -40° 27' 04". 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. As an emission nebula, Prawn Nebula responds very well to dual-narrowband filters under city skies.