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Astronomik CLS Light Pollution Filter - 1.25" Mounted
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The Astronomik CLS Filter is considered the highest quality light pollution filter on the market today.
- This CLS filter is mounted in a 1.25" cell.
- The Astronomik CLS Filterprovides nearly 100% transmission between 450nm and 530nm.
- The multi-layered coatings on all Astronomik filters protect amazingly well against scratching, aging, and humidity.
- The Astronomik CLS Filter shows more stars and detail in nebulae.
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Astronomik 1.25" Mounted CLS Light Pollution Filter
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.
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.
Astronomik 1.25" Mounted CLS Light Pollution Filter Features....
- 92% transmission at 486nm (H-beta)
- 92% transmission at 496nm (OIII)
- 92% transmission at 501nm (OIII)
- 97% transmission at 656nm (H alpha)
- Pass from 450 to 540nm and beyond 650nm
- Parfocal with other Astronomik filters
- Glass thickness: 1mm
- Completely resistant against high humidity, scratches and aging effects
- Diffraction limited, the filter will not reduce the optical performance of your telescope!
- Astronomik filters are delivered in a high-quality, long lasting, filter box
Astronomik Product Number: CLS-1
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