Astrodon Narrowband Ha/Oiii/Sii 65x65mm Filters

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Hello,

I am looking for 65x65mm square Astrodon Narrowband Filters, preferably:
Ha - 5nm
Oiii - 3nm
Sii - 3nm

Willing to either pay for them, or trade Chroma 50x50mm filters (both regular, and/or high-speed f/3 versions) and/or other goodies.

Thanks,
Ani

Funding Member

Telescopes, Astronomy, Binoculars