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With the Herschel wedge, solar observation in white light is particularly safe. This is ensured by the integrated, multi-coated ND3 filter and the ceramic plate at the lower end. Solar observation with the Herschel wedge is also particularly easy: you only need to insert the Herschel wedge into the telescope like a diagonal mirrors. The built-in variable polarisation filter allows you to adjust the brightness.
The Herschel wedge (also known as a Herschel prism ) only allows a harmless proportion of the high-energy sunlight to pass through to the observer. The much larger part is directed so that the focal point is far outside the prism. The plate made of a heat-resistant special ceramic prevents this radiation from escaping (light trap).
With a Herschel wedge, the image of the sun is sharper and richer in contrast than when using lens filters made of film or glass, as the latter suffer from reflections between the lens and the filter. Solar photography is particularly successful with the Herschel wedge.
Please note: The Herschel wedge is ideal for refractors (refracting telescopes) with an aperture (lens diameter) of up to 152 millimetres (6 inches). Under no circumstances should it be used on a Newtonian telescope or a catadioptric system (SC, ACF, Maksutov)!
Tip: Remove the finder scope from the telescope during solar observation to prevent accidental or deliberate looking through the finder. Instead, you can mount the accessories euro EMC S 074 solar finder, upper section. With the Herschel prism, the illuminated dot on the ceramic plate serves as a solar finder.
