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282 EUR
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price without VAT: 229 EUR
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Astronomik CLS CCD Clip-Filter EOS XL (Astronomik, SKU: 10202083 / 8h00ld) was designed for cameras intended for astronomical use. It enhances contrast between deep-sky objects and the sky background, making it ideal for astrophotography under light-polluted skies.
Compared to UHC filters, it offers a broader transmission range, allowing more light to pass through and resulting in less attenuation of stars.
The CLS CCD filter is optimized to block as much unwanted light as possible while transmitting the maximum amount of astronomical signal. It completely blocks emission lines from artificial light sources such as sodium (Na) and mercury (Hg) lamps as well as natural airglow.
The filter is suitable for mirrorless, DSLR, CMOS and CCD cameras and can be used with telescopes or lenses with focal ratios from f/1.8 to f/15.
Thanks to the integrated infrared (IR) blocking layer, it can also be used with cameras that do not have their own IR-cut filter.
• 1.25" and 2" mounted versions can also be used for observations from light-polluted locations
• excellent choice as a luminance filter for color imaging of emission-line objects
For cameras with a built-in IR filter or for visual observation, the Astronomik CLS filter is a more economical alternative.
• CMOS and CCD photography: very good suppression of light pollution
• DSLR photography (original): good, shifted white balance but increased contrast
• DSLR photography (astro-modified): very good, nearly perfect color balance
• DSLR photography (MC-modified): very good, nearly perfect color balance
The new Astronomik XT filters were specifically designed for astrophotography with wide-angle lenses and provide sharp star images all the way to the corners of the frame. When using lenses with extremely short focal lengths, standard clip filters may introduce imaging errors, causing stars at the edges of the frame to stretch into small streaks.
To solve this issue, Astronomik XT filters are manufactured on an extremely thin substrate of only 0.3 mm or 0.5 mm thickness. This significantly reduces optical aberrations while maintaining the highest optical quality and using the same durable coating technology as all Astronomik filters.
• 95% transmission at 486 nm (H-beta)
• 95% transmission at 496 nm (OIII)
• 95% transmission at 501 nm (OIII)
• 97% transmission at 656 nm (H-alpha)
• transmission range: 450–520 nm and 640–690 nm
• glass thickness: 1 mm (except OWB Type 3 and XT filters)
• finely polished optical glass free of streaks, internal stress and bubbles
• extremely scratch-resistant and durable coating
• completely resistant to humidity and aging effects
• Astronomik MFR coating
• parfocal with other Astronomik filters
• diffraction-limited performance
• optimized transmission ranges
• supplied in a high-quality, durable filter box
All Astronomik filters are parfocal and diffraction-limited, ensuring that the optical performance of your telescope remains uncompromised. Each filter undergoes strict quality control before shipment.
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