Baader Planetarium Calcium GEN-II Filter 1¼"
Key specifications
| Filter type | Narrowband |
|---|---|
| Passband | CaK-II 394 nm |
| Bandwidth | 5 nm |
| Filter size | 1.25" |
| Mounted | Yes |
About
A single (unstacked) 5 nm calcium-K filter at 394 nm for photographing the solar chromospheric network, for camera use only behind a solar pre-filter; supplied with a sheet of AstroSolar Photo Film OD 3.8. Replaces the older stacked K-Line filter.