₹8,800.00INR
The Astronomik CLS (City Light Suppression) Filter is one of the most effective light-pollution filters available today, designed to deliver exceptional clarity when observing or imaging deep-sky objects from urban and suburban skies. Whether you're capturing galaxies, nebulae, or star clusters, the Astronomik CLS filter dramatically enhances contrast by filtering out unwanted artificial light while preserving the natural colours of celestial objects.
The Astronomik CLS filter blocks major light pollution sources such as mercury vapor lamps, high-pressure sodium lights, and skyglow, making it ideal for observers living in bright Indian cities like Mumbai, Delhi, Bengaluru, Chennai, Kolkata, and Pune.
With extremely high transmission in the H-alpha (656nm), H-beta (486nm), OIII (501nm), and SII (672nm) regions, the filter maintains excellent brightness and color integrity, perfect for both visual astronomy and DSLR/CMOS astrophotography.
Astronomik filters are made in Germany using ultra-thin, scratch-resistant coatings and optically polished glass that ensures:
Zero image distortion
No reflections or halos
Long service life with no fading
Compatible with:
Refractors
Newtonians / Dobsonians
SCTs / Maksutov telescopes
DSLR lenses (using adapter rings)
Indian skies have high levels of light pollution and humidity. The CLS filter is engineered to deliver high-contrast views even in challenging environments, and is widely preferred by astrophotographers for Milky Way, nebulae, and galaxy imaging.
100% genuine Astronomik products
India warranty & after-sales support
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Expert guidance from India’s top telescope specialists