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Antlia H-Alpha Pro 3nm 36mm
Antlia H-alpha 3 nm Pro Narrowband — 36 mm unmounted
Antlia's Pro series 3 nm H-alpha filter isolates the 656.3 nm hydrogen line with a tight 3 nm bandpass and OD5 blocking from 300 to 1000 nm, for high-contrast narrowband imaging.
Specifications
Line (CWL)
H-alpha, 656.3 nm
Bandwidth (FWHM)
3 nm
Peak transmission
Over 88%
Blocking
Over OD5, 300–1000 nm
Thickness
2 mm ±0.05 mm
Format
36 mm diameter, unmounted
Manufacturer documentation
Antlia H-alpha 3nm Pro 36 mm
Compatibility notes 3 nm Pro series, 36 mm unmounted. Focal-ratio range not stated.
Additional specifications
Reference
87983
Data sheet
Blocking
＞OD5, 300–1000 nm
Format
36 mm unmounted
FWHM (nm)
3
Peak transmission (%)
＞88
Thickness (mm)
2 ±0.05
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Antlia H-alpha 3 nm Pro Narrowband — 36 mm unmounted Antlia's Pro series 3 nm H-alpha filter isolates the 656.3 nm hydrogen line with a tight 3 nm bandpass and OD5 blocking from 300 to 1000 nm, for high-contrast narrowband imaging.
Manufacturer model: Antlia H-alpha 3nm Pro, 36 mm unmounted · Specifications checked against manufacturer data on 2026-11-03
