Filter · 2024– · MSRP $259
Optolong L-Para 2"
Key specifications
| Filter type | Narrowband |
|---|---|
| Passband | OIII 500.7 nm + Ha 656.3 nm |
| Bandwidth | 10 nm |
| Filter size | 2" |
| Mounted | Yes |
About
Dual 10 nm OIII and H-alpha narrowband light pollution filter with over 85% line transmission at f/2 and slower, suited to both fast (RASA/Hyperstar) and normal systems, with anti-halo optimization. 2-inch mounted.