OIII 6.0 Filter

After months of fighting light pollution on the Veil Nebula, this filter's narrow 6nm bandpass made the OIII signal pop like never before. The measured transmission value of 98% clearly made a difference in my total exposure time.

First light with this filter showed the Veil Nebula's filamentary structure with a clarity I've never seen before — those 6nm bandwidths really do cut through light pollution. It threaded onto my 2-inch eyepiece without any binding.

Finally got the 6.0nm bandwidth version and it really pulls out those OIII details in the Veil, even from my Bortle 7 backyard. The measured value matches the spec sheet, so no disappointments there.