ToupTek PureSight A1 Hα & [OIII] Dual Narrowband 5nm F/3.2
Key specifications
| Filter type | Narrowband |
|---|---|
| Passband | Hα 656.3 nm + OIII 500.7 nm |
| Bandwidth | 5 nm |
| Filter size | 2" |
| Mounted | Yes |
About
2-inch mounted dual narrowband filter passing Hα and [OIII] in 5 nm bands for emission-nebula imaging with color cameras, on a fused-silica substrate and rated for systems at f/3.2 and slower.