Astronomik filters agains light pollution

The Astronomik filters against light pollution increase the contrast between deep-sky objects and the sky background and are therefore ideal for photography and observation under light-polluted skies.

The Astronomik filters against light pollution are designed to block interfering light from artificial light sources such as streetlights and LED lamps as well as all lines of natural airglow. At the same time, they allow as much light as possible from astronomical objects to pass through. 

The stronger the light pollution, the narrower the Full-Width-Half Maximum (FWHM) of the filter should be in order to achieve maximum contrast. The Astronomik filters against light pollution can be sorted from narrow to wide as follows: UHC, UHC-E, CLS and CLS-CCD.

The Astronomik CLS and CLS-CCD filters are suitable for all deep-sky objects, while the Astronomik UHC and UHC-E filters are primarily intended for nebulae with emission lines. The transmission range of the Astronomik UHC-E filter also includes spectral lines that enhance the observation of comets.

The Astronomik UHC, UHC-E and CLS filters are designed for use with unmodified cameras or astro-modified cameras.

The Astronomik CLS-CCD filters are specially developed for cameras that are sensitive in the infrared (IR). The integrated IR-blocking layer makes these filters perfect for Full-Spectrum modified system and DSLR cameras as well as for CMOS and CCD cameras.

You can achieve a good colour balance with the filters against light pollution by manually adjusting the white balance in daylight and then shooting at night using the settings you have obtained.

Detailed insights into each filter’s specific applications can be found on the individual product pages.