Antlia U-Venus Filter

Antlia Venus-U filter is designed for imaging the cloud structure of Venus and Jupiter with CCD cameras on a telescope. Cloud details primarily reflect in the ultraviolet band which cannot normally be imaged using broadband filters. 

The Venus-U filter uses the latest dielectric interference coating technology to achieve high transmission efficiency and exceptional isolation of the critical UV bandwidths. The filter effectively blocks the contrast damaging frequencies beyond 400nm which typically swamp the ultraviolet cloud details on camera sensors

When U-Venus filter is used with a planetary camera, it is recommended to remove any protective UV-IR window in front of a color planetary camera because this filter may attenuate transmittance of the critical ultraviolet band that contains cloud details.