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Askar M48 Backfocus Adjuster
Back focus can be a challenge for astrophotographers utilizing different combinations of equipment. This backfocus adjuster from Askar will provide an adjustable amount of additional back focus between 16 mm and 20 mm. This adjuster has a camera side threading of M48.
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This M48 Backfocus Adjuster from Askar has a telescope-side female thread of M54x0.75, with a camera-side male thread of M48x0.75. The overall thickness is 18 mm and provides backfocus adjustment in increments of around 2 mm.
This backfocus adjuster is CNC machine and provides two holes for fixing screws, allowing it to be used with a variety of different products.
