Highty recommended to piggy back your camera
Excellent experience. I've used this DSLR Camera Dovetail Assembly to piggy back my DLSR on my 8" RC telescope to take images of the last total lunar eclipse, while I was the main telescope in visual mode. Highly recommended.
This is exactly what I was looking for! It's all metal (except the knob maybe?) and extremely solid. Held my Sony a7R III with battery grip and 70-200mm f2.8 lens without any vibration or issues at all.