The TopHat Collaboration - constantly growing older *and* wiser.
	Members of the collaboration inspecting the Chicago Thermal chamber where telescope tests are conducted at temperatures as low as -28 C.
	Grant Wilson, Dave Cottingham, Ed Cheng, and Alex Bier shooting the breeze in the Indigo dewar construction area.
	Peter Timbie doesn't like what he sees.
	The "Emerald Readout Electronics", a PC-104 based signal control and readout system designed to work with TMS.
	Another picture of the Thermal Chamber. The belt (shown slack) is used to measure the torque required to turn TopHat at various temperatures.
	The TopHat primary mirror (with protective cover).
	Yet another view of the University of Chicago Thermal Chamber. If you've read this far you deserve to know that this is a surplus food refrigerator.
	The Chicago Fourier Transform Spectrometer. This device is used to characterize filters between 90 GHz and 1.2 THz.
	A closer look at one of the FTS mirrors and polarizers.
	The gold dewar sitting above the FTS contains a 4K bolometer.
	Another view of the inner workings of the FTS.
	The Chicago "Green Dewar" which is used for 4K bolometer and optics testing.
	Indigo dewar B. The view is into the He3 volume which is in the process of getting pumped dry of water.
	The TopHat optics block. Five channels spanning the frequency range of 150 GHz to 660 GHz.
	Another view of the TopHat optics block. Looking into the input aperture you can see the first dichroic splitter.
	The constant threat of decapitation and subsequent skinning keeps the Chicago graduate students working hard!