I’ve added a RACI to join my Celestron Star Pointer Pro.
Pretty quick work with a drill and a couple of small bolts. Took about 10 minutes from start to finish.
I have several Celestron 9x50 RACI finders - I really like the optics of this finderscope.
In my opinion better than the Orion type RACI but not as nice as the Stellarvue RACI.
One is mounted on my C8.
The other is Newtonian mounted.
The main issue (as others mentioned) is the heavy finderscope rings and mounting shoe.
The greater the finder weight, the more counterweight needs to be added to balance the OTA.
In all my Celestron RACIs the mounting rings/base are considered useless (put in their box and stored).
On my C8, I have a discontinued ultra narrow Losmandy C8 bar (remember them from the 1990s) as well as the discontinued Losmandy RDF65 (remember them). I remounted the Celestron RACI Finderscope in the RDF65 and it fits perfectly on the Losmandy narrow bar. It is nice that I can reposition it along the bar to help counterbalance as required.
For the Newtonian, I use the entire RDF65 removable mounting ring and base with Celestron RACI.
The Celestron RACI Finder also fits the Orion/Skywatcher Finder stock (Ad shown in posting #9 photo).
Lots of non-Celestron options.