- ultra hard and bright O-III visual contrast for 6" and larger telescopes
- no visual color fringing, just pure O-III
- non-ageing sealed coating edges
| TRANSMISSION RANGE | O-III |
|---|---|
| FILTER THICKNESS (WITHOUT CELL) | 2 mm |
| HBW (HALFBANDWIDTH) | 10nm |
| CWL (CENTRAL WAVELENGTH) | 502 nm |
| AR-COATING | dielectrically coated, planeoptically polished |
| FILTER USAGE | Contrast Enhancement, O-III, Planetary |
| TYPE OF FILTER | Narrowband |
| SINGLE OR SET? | Single Filter |