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Astronomik CLS T2 Thread Filter not IR blocked
£100.00 inc. tax

£83.33 ex. tax
? Tax based on United Kingdom.

Description

Astronomik CLS T2 Thread Filter (not IR Blocked)

This broadband light pollution filter works on all objects for both visual use, and imaging with standard and Baader modded DSLR cameras. Blocks Sodium, Mercury and air-glow emission.

The Astronomik CLS is a budget filter for visual observation, Black & White photography and CCD photographs of nebulae, galaxies and star clusters with astronomical instruments of any size.

The Astronomik CLS blocks the light of the spectral lines of mercury and sodium-vapor lamps and lets the largest part of the visible light and H-alpha emissions pass. All the important emission lines, as well as the spectral region that the very well dark adapted eye can see, can pass through the filter.

Main use

The filters are optimized for use with aperture ratios from 1:3 to 1:15. Transmission losses and chromatic distortions, which are problems with other filters, only appear with Astronomik filters when extremely bright aperture ratios of 1:2 and more are used.

The CLS filter is suitable for use with telescopes of all aperture sizes.

Can also be used as an effective minus violet filter by refractor owners.

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Product Code
- ASTCLT2
Product Condition
- New

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