- R165 minutes (33 frames)
- L225 minutes (45 frames)
- O50 minutes (10 frames)
- G175 minutes (35 frames)
- H65 minutes (13 frames)
- B145 minutes (29 frames)
- S50 minutes (10 frames)
The Iris Nebula (NGC 7023) is a reflection nebula located in the constellation Cepheus, about 1,300 light-years from the Sun. The nebula is about 6 light-years in diameter and resembles a flower in appearance.
Nebula Structure
The nebula is composed of dusty material known as interstellar gas and dust surrounding a massive, hot, young star in the process of forming. This central filament of cosmic dust glows with a reddish photoluminescent color, as some of the star's ultraviolet radiation is converted into observable red light.
Color Perception
Although the red hue is due to the central dust, the blue color is dominant. This is due to the reflection of light from nearby stars by the dust, giving the object a bright and contrasting color.
Significance for Astronomy
The Iris Nebula is an important object for studying the processes of star formation and the interaction of stellar radiation with interstellar dust. It provides a unique opportunity to study the dynamics and chemical composition of the interstellar medium.
| Photo | Date | Frames | Exposure | L | R | G | B | H | O | S | N |
|---|---|---|---|---|---|---|---|---|---|---|---|
 | 04 Sep 2021 | 96 | 08:00 | 02:00 | 01:05 | 01:10 | 01:00 | 01:05 | 00:50 | 00:50 | |
 | 30 Jan 2021 | 96 | 08:00 | 02:00 | 01:05 | 01:10 | 01:00 | 01:05 | 00:50 | 00:50 | |
 | 01 Nov 2018 | 89 | 01:29 | 01:29 | |||||||
 | 20 Oct 2018 | 54 | 00:54 | 00:54 |
Visibility chart of Iris Nebula (NGC 7023) during the day
| Date | Moon Phase | Exposure | CCD Temperature | Gain | Offset | Filter |
|---|---|---|---|---|---|---|
- 2023ixf•
- 40 Eri•
- Abell 74•
- Artemis A868 SA•
- a Canis Minoris•
- C 2020 R4 ATLAS•
- C 2020 T2 Palomar•
- C 2021 S3 (PANSTARRS)•
- Haumea (2003 EL61)•
- HCG 68•
- HCG 92•
- IC 1318B•
- IC 1396•
- IC 1795•
- IC 1805•
- IC 1848•
- IC 1871•
- IC 3322A•
- IC 342•
- IC 4015•
- IC 405•
- IC 417•
- IC 434•
- IC 443•
- IC 4703•
- IC 5070•
- IC 5146•
- IC 63•
- M 1•
- M 101•
- M 103•
- M 109•
- M 13•
- M 15•
- M 27•
- M 3•
- M 33•
- M 42•
- M 45•
- M 5•
- M 51•
- M 57•
- M 63•
- M 64•
- M 74•
- M 76•
- M 81•
- M 82•
- M 86•
- M 87•
- M 94•
- M 97•
- NGC 147•
- NGC 1491•
- NGC 1499•
- NGC 1579•
- NGC 1961•
- NGC 2146•
- NGC 2239•
- NGC 2403•
- NGC 281•
- NGC 4236•
- NGC 4565•
- NGC 4631•
- NGC 507•
- NGC 508•
- NGC 5866•
- NGC 5907•
- NGC 6503•
- NGC 6823•
- NGC 6888•
- NGC 6946•
- NGC 6992•
- NGC 6995•
- NGC 7000•
- NGC 7023•
- NGC 7129•
- NGC 7217•
- NGC 7331•
- NGC 7380•
- NGC 7538•
- NGC 7635•
- NGC 7640•
- NGC 7822•
- NGC 891•
- NGC 896•
- NGC 925•
- PGC 54559•
- Sh2-155•
- Sh2-168•
- Sh2 103•
- Sh2 109•
- Sh2 132•
- T CrB•
- UGC 6930•
- V1405 Cas•
- Vesta A807 FA•