• miniCAM8M Sloan Photometric Filter Set: UGRIZ   

They are customized by XiMei Filters.

• [Ar III] Filter: The Ar III (Argon III) filter is a narrowband filter centered around 713nm, designed to capture the specific emission line of triply ionized argon. This emission line is commonly observed in planetary nebulae, H II regions, emission-line galaxies, and in the spectroscopy of ionized gases in laboratory plasmas. 

(M57, captured by Nico Carver using miniCAM8 +ArIII, SII, Ha, OIII filters)