| Names | Iris Nebula, NGC 7023, Caldwell 4, Collinder 429 |
|---|---|
| Type | Reflection nebula |
| Constellation | Cepheus |
| Distance | ≈ 1,400 ly |
| Magnitude | 7 |
| Size | 18′ |
| RA | 21h 01m 36.9s |
| Dec | +68° 09′ 48″ |
The Iris Nebula is a bright reflection nebula located about 1,300 light years from Earth in the constellation of Cepheus. The nebula is illuminated by a magnitude +7.4 star designated HD 200775.1
Photo Details
| Telescope | Seestar S50 (250 mm f/5) |
| Dates | 2026-09-21 |
| Integration time | 3h 14m |