Use of 2" NB filters, Canon lens, and Atik camera

[jkrassner]

I would like to use an Atik 383l+ and Canon EOS lenses (connected via the Geoptick adapter*), with 2" narrowband filters. How do I add the narrowband filters to this setup? What kind of adapter, and where can I get one (in the US)? Thank you

*- http://www.teleskop-express.de/shop/product_info.php/language/en/info/p2836_Geoptik-T2-Adapter-fuer-CANON-EOS-Objektive---mit-Stativanschluss.html