Astronomik CLS Clip-Filter for Canon EOS Full Frame

Astronomik CLS Clip-Filter for Canon EOS Full Frame

Description

The Astronomik CLS Clip-Filter for Canon EOS full frame is designed to improve the observation and photography of deep-sky objects by reducing light pollution. It blocks emission lines from sodium and mercury vapor lamps, as well as natural airglow, while transmitting most visible light and H-alpha emissions. This increases the contrast between celestial objects and the sky background, making this filter ideal for astrophotography in urban areas.

Thanks to its wide passband, the CLS filter allows a substantial amount of light to pass through, minimally dimming stars. It is optimized for use with lenses or telescopes having f/3 and above aperture ratios. Astronomik's Clip-Filter system allows easy installation into the Canon EOS full frame camera body without tools or permanent modifications.

Technical Specifications

• Transmission:

  • 92% at 486 nm (H-beta)

  • 92% at 496 nm (OIII)

  • 92% at 501 nm (OIII)

  • 97% at 656 nm (H-alpha)

• Transmission Range: from 450 to 540 nm and beyond 650 nm

• Glass Thickness: 1 mm

• Material: finely polished optical glass, free of striae and bubbles

• Mount: black anodized aluminum, Clip-Filter system for Canon EOS full frame

• Compatibility: Canon EOS 5D Mk II, 5D Mk III, 6D, etc.

• Resistance: to scratches, high humidity, and aging

• Parfocality: with other Astronomik filters

• Storage Box: included, high-quality and durable

Advantages

• Effective reduction of light pollution

• Enhanced contrast of deep-sky objects

• Easy installation without tools

• Maintains color balance

• Compatible with a wide range of Canon EOS full frame cameras

The Astronomik CLS Clip-Filter for Canon EOS full frame is the ideal accessory for astrophotographers aiming to capture sharp and high-contrast images of deep-sky objects, even in the presence of light pollution. By blocking major sources of artificial light while allowing essential wavelengths to pass through, this filter significantly improves image quality. Its robust design and ease of installation make it a preferred choice for Canon EOS full frame users.