The platform that I suggest we consider would be 68-72" high, approximately the level of Ollie's feet in this picture, and would be at least 4x4', large enough to comfortably fit a transfer dewar. A 10' transfer line reaches the mid-point bayonet fitting of the cryostat. A shelf for a laptop to monitor the fill level (and for convenient keeping to take up into the telescope) could be rigged on the beams at chest height.