Supernova remnant
IC 1340 (IC1340)
In Cygnus (Cyg) • Magnitude 99.0 • 25 arcminutes
Open the free AstroPlanner with IC 1340 pre-selected, scored against your telescope, location, and the live cloud forecast.
Detailed section of the Eastern Veil supernova remnant.
IC 1340 at a glance
| Catalog IDs | I 1340 |
| Type | Supernova remnant |
| Constellation | Cygnus (Cyg) |
| Right ascension | 20h 56m 08s |
| Declination | +31° 02' 52" |
| Apparent magnitude | 99.00 |
| Angular size | 25.1 × 19.9 arcmin |
| Max altitude at 45°N | 76° |
| Best imaging months | Jul, Aug, Sep, Oct |
How to image IC 1340
IC 1340 sits in the constellation Cygnus at right ascension 20h 56m 08s and declination +31° 02' 52". 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.