Filter · MSRP $158
Antlia 7nm Narrowband Sulfur II (SII) Prime Filter - 36mm Unmounted
Key specifications
| Filter type | Narrowband |
|---|---|
| Passband | SII 671.6nm |
| Bandwidth | 7 nm |
| Filter size | 36mm |
| Mounted | No |
About
A 7nm FWHM SII narrowband filter rated for 90% transmission at 671.6nm with OD4 blocking, with the wider bandpass letting it work on optics as fast as f/2.