Vespera CLS Light Pollution Filter

The Vespera light pollution filter or CLS (City Light Suppression) filter allows you to improve the quality of your photos when observing in the city or suburbs. It attenuates the effects of light pollution and therefore increases the contrast between the celestial object being photographed and the background sky.

The broadband filter blocks Na (sodium) and Hg (mercury) wavelengths mainly emitted by urban street lighting or undesirable natural light (atmospheric oxygen radiation, etc.), while allowing the main wavelengths from celestial objects to pass through the filter to the camera sensor.

The CLS filter is particularly useful for improving the brightness of deep sky objects such as nebulae, star clusters & galaxies etc. 

Designed specifically for the Vespera lens, it fits easily and discreetly into the optical arm. The lens ring that holds the CLS filter is equipped with an electronic chip that allows Vespera to detect it when its installed.

Whats included:

1. Vespera CLS Light Pollution Filter