Description
This premium grade ultra narrowband 4.5nm Baader Sulphur II (S-II) filter is for use with fast optical systems with focal ratios between f/3 to f/8. The filter is IR blocked and also has anti-reflection coatings and will give images free of halos and ghosting. The filter also has non-ageging sealed coated edges for long life.
Specifications
| WEIGHT (KG) | 0.073 |
|---|---|
| TRANSMISSION RANGE | S-II |
| FILTER THICKNESS (WITHOUT CELL) | 2 mm / 3 mm |
| HBW (HALFBANDWIDTH) | 4,5nm |
| CWL (CENTRAL WAVELENGTH) | 673 nm |
| AR-COATING | dielectrically coated, plane-optically polished |
| FILTER USAGE | CCD, IR-Cut, S-II |
| FILTER MOUNTED | Unmounted / Mounted |
| TYPE OF FILTER | Narrowband |
| SINGLE OR SET? | Single Filter |
