2026: best dual-narrowband filters for RASA 11?

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John Stone avatar
There's been a lot of new development in filter tech over the last 2-3 years.

I'm looking to buy a RASA11 with a IMX571 camera and am looking for dual-narrowband filters.

I'm looking for the tightest bandpass, most transmission, and least halo experience possible.

Cost is not a large consideration.

So, what's the consensus for filters like these in 2026?
Well Written Engaging
andrea tasselli avatar
There is only one game in town: Antlia. 5nm variety for you. And for me too.