Been meaning to do this one for ages. Not easy because the background gas and dust can be easily lost in the light pollution and noise.
“The Iris Nebula, also known as NGC 7023 and Caldwell 4, is a bright reflection nebula and Caldwell object in the constellation Cepheus. NGC 7023 is actually the cluster within the nebula, LBN 487, and the nebula is lit by a magnitude +6.8 star, SAO 19158.”
Wikipedia
| Object ID | Iris Nebula NGC 7023 / C4 |
| Details | Cepheus Mag. 6.8, 18′ x 18′ |
| Telescope | 250mm f4.8 Newtonian |
| Camera | Atik 460EX |
| Exposure(s) | 10 x 180s each RGB 1×1 |
| Capture | APT |
| Processing | Nebulosity, Photoshop |