Antlia Quad Band Anti-Light Pollution — 2" mounted The Antlia Quad Band filter is a multi-band light-pollution filter for imaging from suburban and urban sites. It passes four bands, including part of the near infrared, while blocking common artificial light sources. Antlia rates it for optics as fast as f/2.
Manufacturer model: Antlia Quad Band Anti-Light Pollution, 2-inch mounted · Specifications checked against manufacturer data on 2026-11-03
The Antlia Quad Band filter is a multi-band light-pollution filter for imaging from suburban and urban sites. It passes four bands, including part of the near infrared, while blocking common artificial light sources. Antlia rates it for optics as fast as f/2.
| Type | Quad-band light-pollution suppression |
|---|---|
| Near infrared | Partly transmitted |
| Blocking | OD4 minimum outside the passbands |
| Thickness | 2 mm ±0.05 mm |
| Fastest focal ratio | f/2 |
| Format | 2-inch mounted, M48 × 0.75 thread |
Antlia Quad Band Anti-Light Pollution filter
Passes part of the near infrared (manufacturer statement). Band edges not tabulated by Antlia.
| Passes nir | Yes |
|---|---|
| Fastest focal ratio | f/2 |
Data sheet
Antlia Quad Band Anti-Light Pollution — 2" mounted The Antlia Quad Band filter is a multi-band light-pollution filter for imaging from suburban and urban sites. It passes four bands, including part of the near infrared, while blocking common artificial light sources. Antlia rates it for optics as fast as f/2.
Manufacturer model: Antlia Quad Band Anti-Light Pollution, 2-inch mounted · Specifications checked against manufacturer data on 2026-11-03
