Pegasus Astro Ha 7nm Filter 2"
Key specifications
| Filter type | Narrowband |
|---|---|
| Passband | 656 nm, Tave>80% |
| Bandwidth | 7 nm |
| Filter size | 2" |
| Mounted | Yes |
About
A 2-inch mounted hydrogen-alpha filter with a 7 nm bandwidth centred on 656 nm, cutting mercury-vapour and sodium-vapour light pollution and atmospheric skyglow for high-contrast narrowband nebula imaging.