Baader Planetarium SunDancer II H-alpha Filter
Key specifications
| Filter type | Solar |
|---|---|
| Passband | H-alpha |
| Bandwidth | 0.06 nm |
| Filter size | Other |
| Mounted | Yes |
About
An electrically heated SolarSpectrum H-alpha etalon with an integrated achromatic 3x telecentric and blocking filter that plugs between star diagonal and eyepiece, turning a telescope of up to 80 mm aperture into an H-alpha solar telescope without an extra energy-rejection filter; 0.6 ± 0.1 Å FWHM at f/30.