A rare occurrence, a Astro-Physics 10" Maksutov-Cassegrain is up for sale on Astromart Auction...bids have reached $26K USD.
http://www.astromart.com/auctions/de...ction_id=18243
Whilst viewing the attached images to the For Sale post I noted something pertaining to the secondary. I thought the secondary on these scopes was aluminized on back of corrector like in the following:
http://www.company7.com/astrophy/maks/250f146.html
Looking at the images on the For Sale ad it looks like the secondary is in a cell.
Just an observation.