Borg Helical Focuser 1.25″ (rotating)

Borg Helical Focuser 1.25″ (rotating)

£47.00✓ 2 year warranty


Out of stock due 10-15 working days

About this product

Model:  borg_4317
Part Number:  4317

Borg’s most economical helical focuser and the only one with a rotating movement, model 4317 is useful as a supplemental visual focuser that provides fine adjustment for a coarse rack-and-pinion focuser, or eliminates the image shift common with standard SCT focusers. This focuser attaches in front via a metric M36.4 P1.0 male thread or M35.8 P0.75 female thread, but inserts directly into a 1.25″ eyepiece sleeve when used with Borg adapter 7316 (which includes threads for 1.25″ eyepiece filters).


  • Length: 38mm to 52mm
  • Travel: 14mm
  • Weight: 60g
  • 31.7mm (1.25") Sleeve
  • M36.4 P1.o Male Thread




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