Filter · 2023– · MSRP $308
Optolong L-eXtreme F2 2"
Key specifications
| Filter type | Narrowband |
|---|---|
| Passband | OIII 500.7 nm + Ha 656.28 nm |
| Bandwidth | 7 nm |
| Filter size | 2" |
| Mounted | Yes |
About
Dual-band 7 nm OIII and H-alpha narrowband filter designed for fast optical systems at f/2 to f/3.3 such as RASA and Hyperstar, keeping line transmission at varying incidence angles. 2-inch mounted.