I would be concerned about this as well. I've not done a lot of astrophotography, but when I have, I've had to make my framing/focusing adjustments, then wait a

I would be concerned about this as well. I've not done a lot of astrophotography, but when I have, I've had to make my framing/focusing adjustments, then wait anywhere from 10 to 60 seconds for the vibrations that motion introduced to fade away, before I used a wireless remote to trip the shutter. Obviously this is worst with a long lens[1], but I seem to remember it being a factor with any of the telephoto lenses I tried. This was using a Manfrotto tripod and head. Seems like some sort of liquid cooling system where the radiator/fan assembly was not mechanically coupled to the camera body (except by flexible plastic tubing) would be a better approach. [1] For example, I have an antique 400mm focal-length lens that really is about 400mm long. With it attached to the tripod near the middle, and the camera at one end, there is a lot of potential for bouncing around.