So far, I think the ZWO FF65 is a great product for the price. I have, however had multiple initial setup issues. The promotional literature for the product says it comes with an M48 adapter with an internal thread for 2" filters. It did not come with one. I bought a ZWO 2" filter for this and now I can't use it. Telescope Canada support has also not been helpful as I've asked several times if this is a shipping error without anyone responding. Also, the FF65 camera back focus is quite long and without the complete adapters that should be supplied, I can't achieve the back focus length. For now I am using the scope with the supplied reducer and the 55mm back focus. I am awaiting the ZWO CAA that should provide additional length for the back focus. Here's hoping ...