Vespera incorporates an anti-fog heating resistor which will need to be activated by the hygrometric sensor. The sensor is now available to purchase here.
Fogging, lens condensation, or dewing is a well-known problem in astronomy, too often responsible for interrupting observations. To handle this problem, STELLINA incorporates a heating resistance system (dew heater) that activates automatically to ...
Like Vespera, Vespera Passengers does not incorporate a mechanical field derotator. The field of view will change as images are stacked. The absence of a field derotator will have only a limited effect (stars at the edge of the field) on photo ...