Antlia LRGB-V Pro 36mm filters

The Antlia LRGB-V Pro is a luminance and colour filter set for monochrome cameras. Antlia designed the R, G and B filters for roughly equal 1:1:1 exposures. B and G both pass over 95 % of the O III line, and R passes H-alpha and S II. A wide gap between the G and R bands cuts the light around 589 nm, where sodium and mercury street lamps emit. The filters are 2 mm thick, with the same substrate thickness for parfocal focus.

I use the unmounted 36 mm version in the ZWO EFW 7 × 36 mm filter wheel of the ASI2600MM Pro, together with the Antlia 3 nm Pro SHO narrowband filters.