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Preorder notice: ships ~300 days after checkout (estimated delivery window)
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Massive 300 mm f/7 dedicated H-alpha telescope built for observatory-class resolution and contrast
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Internal unobstructed etalon delivers a <0.65 Å bandpass in single-stack; factory double-stack configuration targets <0.45 Å for ultra-fine surface structure and high-contrast prominences
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B3400 blocking filter included for generous field coverage and imaging headroom with long focal-length setups
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True Doppler pressure tuning with PC-USB computer control (single or dual system options) for precise, repeatable on-band performance and remote operation
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Premium 3.5" FeatherTouch focuser handles heavy imaging trains with absolute precision and zero slop
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Purpose-built for serious imagers and research-grade visual work—from active regions and filaments to limb dynamics and plage detail
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Engineered for stability: pressure-tuned etalons minimize drift and make quick work of fine feature tuning across the disk