3-D printed adapter for Celestron RACI FinderScope or Celestron StarSense AutoAlign. 

A perfect way to fit your favorite Celestron SCT accessories from Celestron's "proprietary" bracket to the more common Vixen Synta style finder shoe.  Like the SkyRaider RiderShoe for example.

https://www.revolutionimager.com/collections/accessories/products/skyraider-ridershoe

There is also a convenient peep hole for 1x rough centering on bright objects.

Made tough with thick walls and generous infill density.