Vehicle telemetry Unlike most equipment on ROPOS, which adjusts to the pressure at depth, this titanium cylinder maintains one atmosphere of pressure—the same as at the surface. It houses the delicate telemetry system, which guides the robot based on instructions coming down through the tether from the joystick-wielding pilot high above. On the other side of ROPOS is a separate science telemetry system. back to NOVA's Into the Abyss Home ©