ToupTek Hα 36mm 4nm Narrowband Filter
Key specifications
| Filter type | Narrowband |
|---|---|
| Passband | Hα 656.3 nm |
| Bandwidth | 4 nm |
| Filter size | 36mm |
| Mounted | No |
About
36 mm unmounted H-alpha narrowband filter, 4 nm FWHM, quartz glass with IAD coating, from ToupTek's SHO set.