Iris Nebula
The Iris Nebula (NGC 7023) is a reflection nebula located approximately 1,300 light-years from Earth in the constellation Cepheus. Unlike emission nebulae that glow through ionized hydrogen, the Iris Nebula owes its striking blue appearance to microscopic dust particles reflecting the light of the young star HD 200775. The surrounding dark dust clouds are part of a much larger molecular cloud complex, making this region an important laboratory for studying the early stages of star formation and stellar evolution.
OBJECT INFORMATION
| Name/Designation | NGC 7023 (Iris Nebula) |
| Object Type | Reflection Nebula |
| Constellation | Cepheus |
| Distance | ~1,300 light-years |
| Apparent Magnitude | ~6.8 |
| Angular Size | ~18′ (~0.3°) |
IMAGING
| Date | July 31 & August 2–3, 2022 |
| Location | Aegina, Greece |
| Frames | 437 × 60″ exposures |
| Integration | 7h 17m |
| Camera Settings | Gain 101 | Temperature: 0°C |
| Bortle Scale | 4/5 (Rural sky) |
EQUIPMENT
| Telescope | Sky-Watcher Explorer 130PDS |
| Camera | ZWO ASI533MC Pro |
| Mount | Sky-Watcher EQ5 Pro |
| Filter | Baader UV/IR Cut Luminance |
| Accessory | Baader 2″ MPCC Mark III |
| Guide Scope | Artesky 32mm Mini |
| Guide Camera | ZWO ASI120MM Mini |
SOFTWARE
| Acquisition | Astro Photography Tool |
| Guiding | PHD2 Guiding |
| Processing | PixInsight |
| Plugins | RC Astro |