Oculus PRO Handbook Issue 3
The Oculus PRO is designed to minimise any lens and dome dewing problems, but these are very
common in optical systems that are cooled by radiation to the sky. It is very likely that you will have
dewing on humid nights unless the dome is kept warm by powering the internal heater via the 12v
socket on the rear of the assembly. This socket can accept a 2.1mm coaxial power plug from any 12v
DC supply capable of driving at least 1 amp - the polarity is center positive. Heating will increase the
dark signal of the camera, so the dew sensing circuit is set to approximately 50% moisture saturation
in the air before turning on the dew heaters automatically.
A rear view of the Oculus PRO, showing the heater socket and USB cable.