#911X: Threads onto the rear cells of Meade LX-series mirror-lens telescopes and onto Meade ED Apochromatic Refractors, using the Universal Thread Adapter. Also threads to other brands of SCT’s as well. Clear aperture: 36mm.
This filter has a few tiny scratches on the outside perimeter of the housing but the glass/coatings are like new. I really like this filter but it won't work with the focuser I installed. Certain nebula are spectacular with this type of filter.
In fact I like it so much that I would consider a straight-up trade for the same filter but with the 2" EP threads.
I would also trade for an Astronomiks (or similar)1-1/4" Sulfur II filter.
I accept PayPal only and the price includes shipping CONUS. International shipping extra.