GNB (Galaxy & Nebula) Filter

I’ve been struggling to get both Ha and OIII data without switching filters, but this one lets me capture them simultaneously with the galaxy’s broadband signal—total game changer for my dual-band setup. The M28.6 size fit perfectly in my filter wheel, too.

Finally got clear shots of the Orion Nebula with the GNB filter — the way it captures both Ha and OIII in one go is a huge time saver. The 1.25" size fits my filter wheel perfectly.

Finally, a filter that lets me capture Ha and OIII while keeping the galaxy’s broadband signal in the near-infrared—no swapping out mid-session. The 1.25″ size fits my Canon lens adapter perfectly, and the results have noticeably sharper star shapes compared to my old dual-band.