Greetings!
We have a 9.25″ full aperture baader solar film filter, in a neat aircore mount that just force fits inside the rim of the Celestron C9.25 Schmidt Cassegrain telescope.
After trying to use it for imaging, we discovered that is is so much overkill that we got no useable images. The full aperture brings in sooo much light that the zwo asi585mc camera was at its minimum exposure and everything was still overexposed.

So then we built another aircore layer with two 2″ subaperture holes to act as a mask.
Then we needed safe storage for it and built this aircore storage based on the one built for the 10″ Douglas dob 15-20 years ago.

Original 10″ Douglas Dob full aperture filter storage

closed with velcro

The C9.25 full aperture filter


The two 2″ subaperture mask

The C9.25 storage just neeed some sticky velcro

We will add another image of the solar filter itself.. the smaller inner bottom ring is what force fits into the end of the C9.25, then the film then the top ring, which overlaps the C9.25 end.