Astronomik CLS EOS XT Clip Filter
The Astronomik CLS filter in EOS Clip format is a tried and true example of an imaging filter, and the new XT variant provides an exceptional level of clarity. The Astronomik XT filters are an upgraded and improved variant of the Astronomik EOS Clip Filters, using vastly thinner glass to achieve a greater level of clarity and quality. These splendid filters grant incredible potential for aberration free wide field imaging, the entire image crisp and clear to the absolute edge of the field. This in particular is a CLS filter, a fine imaging filter that 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.
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