Filter · MSRP $139
Optolong H-Beta 2"
Key specifications
| Filter type | Narrowband |
|---|---|
| Passband | Hb 486 nm |
| Bandwidth | 12 nm |
| Filter size | 2" |
| Mounted | Yes |
About
12 nm H-beta narrowband visual filter centered on 486 nm for large-aperture telescopes under dark skies; 2-inch mounted.