After some frustration with reflections from my Baader 7nm Ha filter as explained in this link, I decided to buy the new Antlia 3nm Ha filter.
Upon receiving the filter I was struck by the packaging, especially after reading horror stories about how some Astrodons have been packaged. You would think this was the crown jewels. The filter is boxed in a very nice cardboard box. Inside is a large plastic case with a magnetic top. And inside this case the filter is sealed in a gold sealed envelope.
At any rate, my main conclusion is that this filter is halo free and gives tighter stars.
These images were shot on consecutive nights in the first week of January.
ASI 6200mm through Tak FSQ 106, Gain 101
80x5 minute subs for Baader Ha
75x5 minute subs for Antlia Ha
Stacked in APP
Processed in PS
I processed these side-by-side at the same time trying to get them as close as possible.
Given that the Antlia filter is "only" $121 more ($430 versus $309), I would highly recommend this filter. Whether it performs up to Chroma or Astrodon standards, I have no idea, although I speculate it does.
Pixel peepers feel free to inspect the original images on flickr.
Baader 7nm Ha here:
Antlia 3nm Ha here: