Astronomik H-alpha 6nm 2" (M48)
Key specifications
| Filter type | Narrowband |
|---|---|
| Passband | H-alpha 656nm |
| Bandwidth | 6 nm |
| Filter size | 2" |
| Mounted | Yes |
About
A 6 nm narrowband H-alpha filter for imaging HII regions from light-polluted or dark sites, blocking street lighting, airglow and most moonlight from UV through IR. The 6 nm width suits faint objects in crowded Milky Way fields, low dark-current cameras and heavy light pollution. MFR coating, 2" M48 mount.