Baader Planetarium U Filter

While primarily engineered for planetary imaging—specifically capturing cloud structures on Venus—this filter is also highly effective for scientific and creative applications like forensic analysis and ultraviolet floral photography.

No, a standard camera sensor is typically equipped with an infrared/ultraviolet cut filter that blocks the light this tool is designed to capture. You will need a camera that has been modified for full-spectrum or ultraviolet-only sensitivity to see results.

The 80% peak transmission is exceptionally high for a UV filter, which helps keep your exposure times manageable. However, because you are filtering out a significant portion of the visible spectrum, you will still need to use longer exposures than you would with standard visible-light photography.

The filter features a sophisticated 20-layer dielectric coating, so it should be treated like any high-end optical glass. Keep it clean using only approved lens cleaning solutions and microfiber cloths, and store it in its protective case when not in use to avoid scratches.

The UG-11 glass substrate is a specialized material that naturally transmits ultraviolet light while absorbing visible and infrared wavelengths. When combined with Baader's 20-layer dielectric coating, it creates a precise bandpass that ensures only the desired UV light reaches your sensor.

Yes, you can use it for 'UV-only' landscape photography, which produces a unique, high-contrast aesthetic where foliage often appears bright white and skies appear very dark. Just keep in mind that this requires a full-spectrum camera and a significant amount of light, as most of the visible spectrum is blocked.