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I have the Antila dual-band filter (but have so far only managed to use it once due to the terrible weather in recent times).
One of things that attracted me was the claimed halo suppression around bright stars which seems to be a problem with filters containing tight OIII bands. Whether that holds true remains to be seen along with the claimed performance at low f-ratios.
I'm still new to processing these types of images but here are a couple of renditions of my first light with the filter. About 1.8 hours of exposure in Bortle 7 skies at f5.3.
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