Antlia OIII 3 nm Pro Narrowband — 36 mm unmounted Antlia's Pro series 3 nm OIII filter isolates the 500.7 nm doubly ionised oxygen line with a tight 3 nm bandpass and OD5 blocking from 300 to 1000 nm, for high-contrast narrowband imaging.
Manufacturer model: Antlia OIII 3nm Pro, 36 mm unmounted · Specifications checked against manufacturer data on 2026-11-03
Antlia's Pro series 3 nm OIII filter isolates the 500.7 nm doubly ionised oxygen line with a tight 3 nm bandpass and OD5 blocking from 300 to 1000 nm, for high-contrast narrowband imaging.
| Line (CWL) | OIII, 500.7 nm |
|---|---|
| Bandwidth (FWHM) | 3 nm |
| Peak transmission | Over 85% |
| Blocking | Over OD5, 300–1000 nm |
| Thickness | 2 mm ±0.05 mm |
| Format | 36 mm diameter, unmounted |
3 nm Pro series, 36 mm unmounted. Focal-ratio range not stated.
| Cwl (nm) | 500.7 |
|---|
Data sheet
Antlia OIII 3 nm Pro Narrowband — 36 mm unmounted Antlia's Pro series 3 nm OIII filter isolates the 500.7 nm doubly ionised oxygen line with a tight 3 nm bandpass and OD5 blocking from 300 to 1000 nm, for high-contrast narrowband imaging.
Manufacturer model: Antlia OIII 3nm Pro, 36 mm unmounted · Specifications checked against manufacturer data on 2026-11-03
