Optolong Venus U Filter 1.25''

Optolong Venus ultraviolet filter. The Venus U filter allows for imaging (CCD, DSLR, Video) in the ultraviolet spectrum, thereby making cloud structures in the atmosphere of Venus visible. Many cameras are sensitive in the wavelengths between 350 and 1100 nm. The filter allows light to pass through between approximately 320 and 400 nm (UV). However, your camera must not have a UV/IR cut filter present, otherwise the transmitted light would be blocked from the start. Some refractor lenses also block UV radiation. Therefore, the ideal telescopes are Newtonians and RCs. The advantages at a glance: Allows for photographing Venus in the UV spectrum. Features anti-reflective multi-coating. Precision optical polishing up to 1/4 lambda on both sides of the substrate. Warning, this filter must never be used alone for observing the Sun! Warning, this filter must never be used alone for observing the Sun!

Main features

Optolong quality for a reliable and satisfying observation experience.

• Type: Filter
• Material: Schott glass
• Optical coating: multiple
• Frame: 1.25"
• Transmission: 80
• Surface accuracy: 1/4

Main technical specifications