The SolarMax III (SM3) is a 70mm F/5.7 refractor equipped with 60mm external hydrogen-alpha (H-α) filters. Available in both single-stacked (<0.7Å) and double-stacked (<0.5Å) bandpasses and either 10mm or 15mm blocking filters. What makes the SM3 stand out?The SM3 70mm has a new two-speed rack & pinion focuser which creates...
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