Lunt 50mm (Old Etalon) Ha Compact Double Stack Filter (LS50C)

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This uses the old etalon design and will sell until out of stock. New options available on the site. The specially-designed Lunt Solar Systems LS50C is a compact double stack filte r. Notably, it was made especially for the Lunt LS50THa H-alpha Solar Telescope. The LS50C lowers the bandpass of the LS50THa to less than Show more