Hygrometer for VESPERA

Fog is one of the many enemies of amateur astronomers. In a cold or humid environment, droplets and fog can form on the lenses of telescopes and cameras, affecting both the quality of observations and photographs.
The Vespera Hygrometer is a smart accessory that measures the temperature and humidity threshold of your environment at which fogging occurs on the lens of your station.
It is ideal for people who live in a humid region (sea, ocean, river, lakes, ponds, etc.) or in a region where temperatures are cold. The sensor is also great in winter when temperatures approach 0° Celsius.

Anti-fog system
By equipping your telescope with this sensor, Vespera's integral defogger will activate when a certain temperature and humidity threshold is reached. The heat continuously generated around the lens will eliminate fog, creating better viewing conditions and sharper images.

Improved focus
Condensation that causes fogging affects the focus of the Vespera photosensor:
Initialization and acquisition times may be longer because a larger number of photos will be rejected by our image processing algorithms, which check the quality of the images and discard them if they are not of sufficient quality.
The sharpness of the images, which in astrophotography is judged primarily by the sharpness of the stars and the absence of halos, is not as good.
The hygrometer and associated anti-fog system will improve both your observation and your photographs.

A discreet design
Measuring less than 13mm, the hygrometer is equipped with an electronic board that is the smallest board our expert engineers have ever designed. The sensor fits discreetly into the Vespera optical arm and is compatible with the use of filters. It will automatically turn the anti-fog system on and off, so you never have to worry about it.

The box comes with:

• The hygrometer and a screw ready to be installed.
• a mini screwdriver

Instructions:
Make sure Vespera is turned off before installing or removing the hygrometer.
Remove the ring from the standard Vespera lens and carefully insert the hygrometer into the notch above the lens. Screw the sensor firmly with the screwdriver included in the box. The sensor must not move in its housing.
To verify that the sensor is positioned correctly, connect Vespera to your mobile device and launch the Singularity app. In the Space Center and then on the Instrument screen, the ambient temperature and humidity are displayed.
It is not necessary to remove the sensor for each use. We recommend leaving it in your Vespera to avoid any loss or damage.
Activating the defogging system causes increased battery consumption. We recommend that you charge your station before using it.
Fogging also occurs during large temperature changes, for example in winter, when you go from a warm to a cold environment and the air inside your Vespera remains warm. Therefore, we recommend that you take your Vespera outside for at least 30 minutes before starting any observations so that it can adjust to the ambient temperature.