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Preorder notice: ships ~6 months after checkout (estimated delivery window)
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Big-aperture 152 mm f/6 dedicated H-alpha refractor for jaw-dropping full-disk views and ultra-crisp detail on prominences, filaments, plages, and granulation
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True Doppler Pressure Tuning lets you “walk” features across the disk for a dynamic, 3D-like perspective and repeatable on-band performance
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Single HD etalon <0.65 Å @ 656 nm balances high surface contrast with clean limb detail—excellent for serious visual and entry-to-pro imaging
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Blocking filter required for safe operation—choose the package that fits your workflow: B1200 (visual), B1800 (larger FOV/imaging), or B3400 (largest FOV/large sensors); “No Blocking Filter” only if you already own a compatible Lunt BF
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2" rack-and-pinion focuser provides smooth, precise focusing with heavy eyepieces or cameras
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100% unobstructed refractor design with advanced high-contrast coatings maximizes throughput and sharpness at low and high power
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Ready to accessorize: compatible with Sol-Searcher, a range of eyepieces, and common dovetail options
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Expand your science: optional interchangeable CaK module adds multi-wavelength flexibility; night-time conversion available via backing plate & focuser kit
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Field-ready package includes rings, dovetail, dust caps, and a rugged aluminum reinforced case—built for the intermediate to advanced solar observer
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Model: LS152THa (single interference HD etalon)
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Aperture / Focal Length / f-ratio: 152 mm / 900 mm / f/6
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Etalon / Bandpass: Internal HD etalon, <0.65 Å @ 656 nm
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Tuning: Internal Pressure Tune (True Doppler Tuning)
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Focuser: 2" rack & pinion
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Blocking Filter Options: B1200 diagonal (visual), B1800 diagonal (larger FOV/imaging), B3400 straight-through (largest FOV/large sensors)
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Finish: Pearl White with Black and Red accents
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Storage: Aluminum finished hard case with fitted foam
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Weight: ~30 lb
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Preorder Lead Time: ~6 months after checkout (estimate)