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Ships within 48 hours · Estimated delivery Aug 21 - Aug 26
sporting events
One ED (extra-low dispersion) glass element is incorporated to effectively reduce chromatic aberration
improving your signal quality
No more binding or rough adjustments
NII (654nm and 658nm)
Askar M54/M48 Backfocus Adjuster - BFA-M48 30 mm Eyepieces sporting eventsThe M48 version of the Askar backfocus adjuster's front telescope interface is female thread M54x0. 75 and the rear camera interface is male thread M48x0. 75, the overall thickness is 18mm and offers 2mm adjustment range. The backfocus adjuster is CNC machined. Each unit is a 0. 05mm precision adjustment, the surface is printed with a scale for easy adjustment and to save the position. There are two holes for fixing screws, which make the adjuster
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