Antlia 2" ALP-T Dual Band Narrow Band Nebula Filter for S-II and O-III - 3 nm

Antlia ALP-T Dual Band 3 nm Narrow Band Nebula Filter for B/W and Color Cameras

Antlia designed this 3 nm dual line-pass filter for one-shot color cameras (OSC), DSLRs and mirrorless system cameras. However, it can also be used as a narrow-band filter for mono cameras to save valuable shooting time and produce extremely high-contrast luminance shots, even in moonlight and near cities.

The ALP-T dual-band filter passes the deep-red [S II] light (672.4 nm) from sulfur and the blue-green [O III] light (500.7 nm) from oxygen, while blocking all other wavelengths. In particular, the unwanted wavelengths of light pollution and airglow are blocked. This allows you to take deep deep-sky images even in moonlight and from close to the city. The signal-to-noise ratio is greatly increased, allowing you to bring out even the faintest nebulae.

The quality features of Antlia narrow band filters at a glance:

High light transmission and smallest bandwidth to maximize contrast.

Special anti-reflective coating reduces halos around bright stars, but slight halos can be visible and are not accepted as reason for returns!

Single substrate to eliminate internal reflections

Usable in light-polluted areas and dark locations

Extends exposure time in moonlight conditions

Antlia narrowband Pro filters can be used with low signal loss down to f/3 systems

All Antlia narrowband filters are blackened at the edges to prevent internal reflections of stray light

Superior optical reliability reduces image post-processing effort

Safety informations: PDF Download