Another go a this for the ASE Caldwell Project. A really tricky one this. Hidden in the dust from our own galaxy, this would actually be naked eye brightness if not obscured. From two sets of data but still challenging.
| Object ID | C4 NGC7023 Iris Nebula |
| Details | Mag. 9.1 Size 21.4′ x 20.9′ 2021-04-11 |
| Telescope | 250mm f4.8 Newtonian, MPCC |
| Camera | QHY168C @-15°C IDAS P2 |
| Exposure(s) | 25 x 240s, 14x180s darks, flats, bias |
| Capture | NINA |
| Processing | APP, Photoshop, Topaz Denoise AI |