Vaonis Hygrometer Sensor for Vespera

TheVaonis Hygrometer Sensoris an anti-fog system for theVespera Observation Station.* This helps to improve the quality of the image whether you are observing or capturing images of the stars. This is perfect for use in humid andor cold environments. *Sold separately Vaonis Hygrometer Sensor for Vespera The Vaonis Hygrometer Sensor is an anti-fog system for the Vespera Observation Station. This helps to improve the quality of the image whether you are observing or capturing images of the stars. This is perfect for use in humid andor cold environments. Fog Is The Enemy Amateur astronomers are likely to find themselves in cold and/or humid environments, from time to time. This can drastically reduce the quality of the image as droplets and fog can form on the lens. The Vespera hygrometer measures the temperature and humidity threshold of your environment and will activate itself. Heat will then be generated around the lens to remove the fog and create