Antlia Triband RGB Ultra II — 2" mounted The Antlia Triband RGB Ultra II is a light-pollution filter for one-shot-colour and mono cameras. It passes H-alpha, NII, SII, OIII and H-beta with high transmission while blocking artificial light. The II version adds the 486.1 nm H-beta line to the original Triband RGB Ultra, bringing out finer nebula detail.
Manufacturer model: Antlia Triband RGB Ultra Filter II, 2-inch mounted · Specifications checked against manufacturer data on 2026-11-03
The Antlia Triband RGB Ultra II is a light-pollution filter for one-shot-colour and mono cameras. It passes H-alpha, NII, SII, OIII and H-beta with high transmission while blocking artificial light. The II version adds the 486.1 nm H-beta line to the original Triband RGB Ultra, bringing out finer nebula detail.
Versatile and fast
Its balanced transmission keeps colour casts minimal on stars, galaxies and clusters, so Antlia says it suits over 90% of deep-sky targets. A broad bandpass lets it work with optics as fast as f/2 with minimal loss or spectral shift. With mono cameras it can replace luminance for nebulae and galaxies, though not for dark nebulae. Antlia also notes it can be used visually with large telescopes.
Antlia Triband RGB Ultra II — 2" mounted The Antlia Triband RGB Ultra II is a light-pollution filter for one-shot-colour and mono cameras. It passes H-alpha, NII, SII, OIII and H-beta with high transmission while blocking artificial light. The II version adds the 486.1 nm H-beta line to the original Triband RGB Ultra, bringing out finer nebula detail.
Manufacturer model: Antlia Triband RGB Ultra Filter II, 2-inch mounted · Specifications checked against manufacturer data on 2026-11-03
