The TopHat telescope (without sun shield) shortly before going into the thermovac chamber. The telescope has been outfitted with aluminized mylar blanketing to help thermally isolate the cold mirror and cryostat from the hot electronics.

Another view of the telescope showing the digital electronics cage. Also visible are the three secondary mirror supports which suspend the secondary mirror via small kevlar threads.

TopHat (without sun shield) in the thermovac chamber. The sun shield will be lowered in through the roof. Radiator panels will also be installed before the door is closed and the pumping begins. A quartz window on the back wall of the chamber allows pictures of the rotating telescope to be taken with an IR camera.