Trade my Astronomik 2" SII filter for your H-Beta?
Anyone interested in a change to their narrowband imaging?
I have a 2 week old (as new) Astronomik SII CCD filter that is currently inside my STL11000M filter wheel. Looking for a direct swap for a 2" CCD H-Beta filter.
Must be CCD variant, not the visual one.
Anyone interested?
Regards,
Rob
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