Price range: CHF 199 through CHF 359
Capture the finest details of H-alpha nebulae with the Antlia H-alpha 4.5nm EDGE filter. Specially designed for astrophotography, it offers exceptional transmission and optimum noise reduction to reveal the faintest structures in the deep sky.
| Features | Detail |
|---|---|
| Type | H-alpha 4.5nm EDGE |
| FWHM (Full Width at Half Maximum) | 4.5nm |
| Center wavelength (CWL) | 656.3nm |
| Maximum transmission | >90% |
| Out-of-band blocking | OD5 (0.001%) between 300-1000nm |
| Filter thickness | 2mm ± 0.05mm (50mm : 3mm) |
| Substrate | Unglued monoblock optical glass |
| Surface quality | S/D 60/40 (MIL-O-13830) |
| Transmitted wavefront | λ/4 or better |
| Parallelism | <30 arcsec |
| Warranty | 3 years against delamination |
Never look directly at the sun with this filter. This could result in serious eye damage.
