Baader Narrowband enforced 3.5nm H-alpha Filter 50.4mm View larger

Baader Narrowband enforced 3.5nm H-alpha Filter Square

2459456

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50x50mm square unmounted

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Delivered In 2-3 Weeks

£ 379.00

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These 3.5 nm H-alpha Enforced-Narrowband Filters open up the extremely narrow 3.5nm H-alpha world. 
This enforced contrast results in even fainter stars, providing more signal of faintest nebulae detail. Manufacturing such ultra-narrow filter does require extreme coating homogeneity and very high CWL precision, which these filters are designed for (CWL= Center-wavelength)

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