20 Apr 2026
NGC 3521 is a spiral galaxy almost 40 million light years away and found within the constellation of Leo the lion. Stacked in Siril and processed using Affinity Photo.
NGC 3521
12 credit
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Blue | 312 | 4h25m | 51 |
| Luminance | 288 | 4h | 50 |
| Red | 300 | 4h10m | 50 |
| Green | 300 | 4h10m | 50 |