Lunt LS50FHa Front Mount 50mm Double Stack Solar Filter

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LS50FHa — 50mm Front-Mount H-Alpha Solar Filter A 0.35Å tilt-tuned etalon for two purposes: double-stack upgrade for the Lunt LS60MT, or standalone H-alpha filter for compatible cu stomer refractors. Now with new-generation etalons — every unit individually tested on Lunt's precision metrology equipment. Every specification is verified, not estimated. The LS50FHa is a 50mm aperture front-mounted tilt-tuned H-alpha filter with a verified bandpass of 0.35Å. It serves two distinct purposes — as a double-stack etalon for the Lunt LS60MT Modular Telescope, or as a standalone H-alpha solar filter for a customer-supplied compatible refractor. As a double-stack filter for the LS60MT: The LS50FHa mounts to the front of the LS60MT in night configuration, placing its 0.35Å tilt-tuned etalon in series with the LS60MT's internal 0.45Å pressure-tuned etalon. Combined system bandpass: Show more