Product no.: 15907Manufacturer: Lunt Solar Systems
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This etalon sun filter is compatible with all LS50FHa filter systems and LS60THa telescopes of Lunt Solar Systems.
By adding this etalon system allows the FWHM reduce to ~ <0.55 Angstrom (dependent upon scope). Thus the contrast is increased significantly on the solar surface, which more details on the sun are visible.
If the filter only single-stacked is used with an optional blocking filter, then the half-width is <0.75 angstroms.
Please note: only to use as a double-stack filters or together with an additional available blocking filter.
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