I am looking to trade my Luminicon Oxygen III (1.25") filter for an F/6.3 focal reducer. The filter is in mint condition with original box, used only once!
I am also looking for a few other goodies for my C-8. Looking for a piggy back and tele-extender.
I would also be willing to trade my OIII filter for a filter that fits on the rear cell of my SCT, instead of the F/6.3. Perhaps an Orion UltraBlock, or anything else suitable for astrophotography.