Bushnell style erecting prism (1.25").
This accessory is for terrestrial viewing with SCT scopes. It flips the image right side up when using your SCT telescope for viewing in your neighbors windows. I paid $79 for it and will sell for $55 / I will pay for shipping in CONUS. I dont need it anymore because:
1. I sold my SCT
2. My neighbors are ugly
Call if youre interested