Coronado Filter Adapter for the SolarMax 40 to fit the TV-76 or Pronto or any scope with the same thread. It is also the same thread as the SolarMax 60, so you can convert your 60 adapter to work with the SolarMax 40.
Anacortes price (part # AP102) is 155.00 plus shipping and it is backordered.
You can have this one for $110.00 shipped to your door!
Thanks for looking!