SHO (S-II, H-α & O-III) Narrowband 3nm Pro Filter Set - 2"
Antlia
$1,303.50
1 stores
In stock
The Antlia SHO (S-II, H-α & O-III) Narrowband 3nm Pro Filter Set delivers premium narrowband imaging performance for deep-sky astrophotography, featuring three individual filters optimized for emission nebulae, planetary nebulae, and supernova remnants. Each 2-inch mounted filter combines an ultra-narrow 3nm bandwidth with high transmission rates (90% for H-α and S-II, 85% for O-III) and OD5 out-of-band blocking to maximize contrast while minimizing light pollution and haloing around bright stars. Compatible with optical systems as fast as f/3, these filters are ideal for monochrome CCD/CMOS cameras and enable the creation of striking Hubble Palette compositions in post-processing.
Specifications
| S-II Center Wavelength | 671.6 |
| O-III Center Wavelength | 500.7 |
| Mount Size | 2 in |
| O-III Peak Transmission | 85% |
| Filter Set Configuration | 3 filters (S-II, H-α, O-III) |
| Substrate Material | Schott optical glass |
| Filter Thickness | 2 mm |
| Bandwidth (FWHM) | 3 |
| H-α Center Wavelength | 656.3 |
| Minimum Focal Ratio | f/3 |
| S-II Peak Transmission | 90% |