What data does the Pegasus Environmental Sensor provide to my Powerbox?
The sensor provides two key environmental metrics: ambient temperature and relative humidity. The Pegasus Astro software uses this information to calculate the current dew point, which is critical for automating dew heater control.
How does the Environmental Sensor help prevent dew on my 8" SCT?
By connecting the sensor to your Ultimate Powerbox v1 or Pocket Powerbox, the system automatically calculates the dew point. It then adjusts the power to your dew straps to keep the corrector plate of your SCT just slightly warmer than this temperature, preventing condensation from ever forming without overheating the optics.
Is this sensor compatible with the Ultimate Powerbox v2/v3 or Pocket Powerbox Advance/Micro?
No. This model uses a 3.5mm stereo jack and is specifically designed for the original Ultimate Powerbox v1 and Pocket Powerbox. Newer models like the UPBv2/v3 and Pocket Powerbox Advance/Micro use a different connector (RJ12) and require a different sensor model.
Can I use the Environmental Sensor to automatically adjust focus?
Yes, indirectly. While the sensor doesn't control the focuser itself, it provides the necessary ambient temperature data to your control software (like N.I.N.A. or SGP). This allows you to enable temperature compensation, where the software automatically adjusts the focuser position as the temperature changes throughout your imaging session on a refractor or reflector.
How do I connect the Environmental Sensor to my Pocket Powerbox?
Simply plug the sensor's 3.5mm stereo jack into the port labeled "EXT" or "ENVIRONMENT" on your Pocket Powerbox. The device will be automatically detected by the Pegasus Astro software, and the environmental readings will appear in the dashboard.
Where should I place the Environmental Sensor on my telescope rig?
For the most accurate readings, place the sensor in a location that reflects the true ambient conditions, away from direct heat sources like your laptop exhaust or the Powerbox itself. Many users attach it to a dovetail bar or tripod leg, ensuring it has free airflow.