ToupTek Hα 2" 4nm Narrowband Filter
Key specifications
| Filter type | Narrowband |
|---|---|
| Passband | Hα 656.3 nm |
| Bandwidth | 4 nm |
| Filter size | 2" |
| Mounted | Yes |
About
2-inch mounted H-alpha narrowband filter with a 4 nm FWHM on quartz glass, IAD coated, part of ToupTek's SHO 4 nm set for Hubble Palette imaging.