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OIII CCD filter for narrowband imaging.
Baader SII CCD 8nm filter for narrowband imaging.
H-alpha CCD Filter 7nm for high contrast narrowband imaging of nebulae
Baader Narrowband enforced 3.5nm H-alpha Filter 2inch
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).
The Baader H alpha CCD Filter 35nm is for narrowband imaging
H-beta filter for narrowband imaging. 8.5nm Passband
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