19 Oct 2023
The prominent "Three" of the (northern) summer: the Trifid Nebula (M20), the Lagoon Nebula (M8) with the NGC6559 Emission Nebula build a well known Triplet for the observer. The objects are very suitable for exposures with narrowband .
M8
5 credit
Filtro | Exp. media (s) | Esposizione totale | Sottoframe |
|---|---|---|---|
| Halpha | 1374 | 7h15m | 19 |
| Red | 10 | 3m | 18 |
| Green | 10 | 3m | 18 |
| Blue | 10 | 3m | 18 |
| Luminance | 10 | 3m | 18 |