Filter · MSRP $158
Antlia 7nm Narrowband H-alpha (Ha) Prime Filter - 36mm Unmounted
Key specifications
| Filter type | Narrowband |
|---|---|
| Passband | H-alpha 656.3nm |
| Bandwidth | 7 nm |
| Filter size | 36mm |
| Mounted | No |
About
A 7nm FWHM H-alpha narrowband filter wide enough to also pass the NII 654.8/658.3nm lines, rated for 90% transmission at 656.3nm with OD4 blocking and usable on optics as fast as f/2.