28 Nov 2021
This dark nebula in the constellation Scorpius is known as the Dolphin Nebula. Besides the Barnard Catalogue it's listed also in the Lynd's Catalogue of Dark Nebulae as LDN 1698. The image was created from multiple One-Click observations with total exposure time 5 hours 20 minutes.
Barnard 252
9 credit
Filtro | Exp. media (s) | Esposizione totale | Sottoframe |
|---|---|---|---|
| Luminance | 750 | 4h10m | 20 |
| Green | 480 | 2h40m | 20 |
| Blue | 510 | 2h50m | 20 |
| Red | 660 | 3h40m | 20 |