Description
Highlights
- 50 x 50 mm x 3 mm Baader CMOS H-alpha / O-III / S-II Narrowband Filter Set – Precision Grade
- 6.5 nm FWHM, recommended for optical systems from > f/3.4
- Reflex-Blocker™ hard coated and planeoptically polished – with sealed coating edges (Life-Coat™)
- Blackened edges all around, with filter-lead-side-indicator in the form of a telescope-sided black outer rim
- Optimized for modern CMOS cameras, but likewise excellent for CCD camera technologies
Description

Specifications
| Manufacturer | Baader Planetarium |
|---|---|
| SKU (#) | 2961655 |
| EAN Code | 4047825103949 |
| Net weight (kg) | 0.22 |
| Suitable for f/ratio | > f/3.4 |
| Transmission Range | H-alpha / O-III / S-II |
| Filter Thickness (without cell) | 3 mm |
| HBW (Halfbandwidth) | 6.5 nm |
| CWL (Central Wavelength) | 656,3 nm / 500,7 nm / 671,7 nm |
| AR-Coating | Reflex-Blocker™ hard coated, planeoptically polished |
| Special Features | CMOS-optimized with Life-Coat™ |
| Filter size | 50 x 50 mm |
| Filter Usage | CMOS, CCD, H-alpha, O-III, S-II |
| Filter mounted | Unmounted |
| Type of Filter | Narrowband |
| Single or Set? | Filter-Set |
| Filter shape | square |

































