ASTRONOMIK ASCLSSCCD2-CLS CCD FILTER 2"

Astronomik CLS-CCD Nebula Filter for Astrophotography - 2 inch Filter Cell

Astronomik CLS-CCD Nebula Filter for Astrophotography

This filter is suitable for photographing nebulae, star clusters and also galaxies even from close to the city. The contrast of the deep-sky objects is enhanced, because the light of the artificial illumination is blocked as far as possible. This allows you to expose 3x longer before the sky background is brightened. The CLS CCD filter thus improves results whether you are working near cities or under dark skies far from settlements.

The CLS CCD filter is ideally suited for photographic use on telescopes of all apertures with focal ratios from f/15 to f/2.

The principle of operation of the CLS CCD filter:

The filter completely blocks the emission lines of low and high pressure lamps (mercury (Hg) and sodium (Na)) and the lines of airglow. This improves contrast everywhere, even under dark alpine skies.

All important emission lines of astronomical objects are transmitted. The filter also blocks infrared light (IR light). An additional IR blocking filter is therefore not necessary.

For which cameras is the CLS CCD filter suitable:

The filter is suitable for virtually all cameras. It is optimal for color cameras, because it improves the contrast without distorting the color. We therefore recommend the filter especially for DSLR and system cameras and for astro cameras with color CMOS sensors. But the filter is also well suited for monochrome cameras, for example to make good luminance images.

The filter also provides contrast enhancement during visual observation.

When mounting, the orientation of the filter is unimportant, as both sides have an anti-reflective coating.

The protective ring provides optimum protection for the filter:

Astronomik delivers the round filters from 31 mm diameter with a protective ring at the edge. The ring protects the filter from scratches on the edge and stabilizes the filter. The ring is 3.5 mm high.