Once the top section tube is removed the heater (consisting of two 50 watt metal case power resistors plus heat sink plate),
the thermostat, circulating fan, the tube supports and camera are revealed.
Here is a close up of thermostat control. It is set at 100 F (37.7 C)which prevents dew or ice from forming on the dome.
Close up of the Rainbow L163VDC4P fisheye lens adjustment levers. Protective cap over the lens.
The Sony HiCam HB-710E camera body.