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Filtro Astronomik UHC-E standard 31.8 mm Visualizza ingrandito

Astronomik UHC-E filter diam. 31.8 mm

Astronomik

AK-8H00F0

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Astronomik UHC-E filter for diam. 31.8 mm eyepieces and accessories. Inner diameter 28.5 mm.

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65,00 €

Ordered upon request

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Astronomik UHC-E filter for diam. 31.8 mm eyepieces and accessories. Inner diameter 28.5 mm.

The Astronomik UHC-E filter provides a FWHM of 45nm and blocks the light of typical streetlights (e.g. sodium and mercury vapour) as well as airglow. Thus it increases contrast between your target and the night sky. The contrast enhancement is less than that of the Astronomik UHC filter, but at the same time the transmitted amount of starlight is greater. It's therefore better suited to smaller telescopes. As the UHC-E filter passes a spectral line of Carbon (due to the higher FWHM) it opens up the possibility of comet observation.

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