Electronic control with USB connection for the LUNT Pressure Tuner system.
The PC-USB is a microprocessor-controlled pressure regulator for the Pressure Tuner (PT) tuning method. It can be easily connected to all LUNT instruments with Pressure Tuner; the PCUSB is simply connected to the Pressure Tuner with an air hose. All existing PT systems can be retrofitted with the adaptors supplied. The PC-USB control can be used at any height.
The PC-USB control can be operated either directly on the console or via USB using a computer (operating system Windows 7 or higher). A USB cable with USB-B plug is required for computer control; this cable is not included in the scope of delivery.
When the PC-USB is switched on, the system is set to the ambient pressure, which takes about 60 seconds. The PC-USB is a simple 2-button system. One button increases and one button decreases the pressure in the Pressure Tuner. Digital feedback and corresponding displays are available. With an accuracy of 0.027 bar (0.4 PSI), the PC-USB enables very precise control of the Pressure Tuner. Changes in internal pressure, for example due to changing temperatures, are automatically compensated. The PC-USB can be programmed to a specific wavelength setpoint. This setpoint is then kept constant regardless of the altitude of the observation location.
With slight changes in air pressure, Doppler effects can be observed very well with the PC-USB. Normally, a telescope shakes during mechanical tuning. This is particularly noticeable at high magnifications, for example when observing Doppler effects on a filament. With the PC-USB, this shaking is a thing of the past at all magnifications, making the observation of Doppler effects much more comfortable.
The PC-USB can be operated continuously for more than eight hours via an internal battery. It also has an external power supply (15V DC), which can be used to operate the instrument and charge the internal battery at the same time.
In addition to the power supply, a three-metre air hose is included in the scope of delivery.
