Focuser Crayford 2" 10-1 Refractor

A Crayford design focuser to suit a refractor telescope. Constructed of strong aluminum with a black anodized finish, a built-in tension knob for adjusting the "feel" to match your preference to gives zero image shift and zero backlash, offer ultra smooth and finely adjustable. 

The friction can be adjusted with a large thumbscrew, a second thumbscrew can lock the focuser tightly in position. Features a 2" brass compression ring, adaptor from 2" to 1.25" with brass compression ring and 2" filter thread.

Ultra smooth focus motion with 10:1 Microfocus knob.

Has a load capacity up to 2.7kg. 96mm flange diameter (fits tube ID of 96mm). For installation the focuser is fixed to the telescope with three M4 screws that radially (120°) in this flange

86mm Specifications;
  • Flange outer diameter on telescope adapter: 86.4mm
  • Minimum focuser height (without 1.25" adapter but with base flange) = 107mm 
  • Maximum focuser height (without 1.25" adapter but with base flange) = 158mm 
  • Tube travel = 50.8mm
  • Focuser weight (with 1.25" adapter) = 864gm

96mm Specifications;
  • Flange outer diameter on telescope adapter: 96mm
  • Minimum focuser height (with 1.25" adapter and base flange) = 121mm 
  • Maximum focuser height (with 1.25" adapter and base flange) = 200mm 
  • Minimum focuser height (without 1.25" adapter but with base flange) = 111mm 
  • Maximum focuser height (without 1.25" adapter but with base flange) = 190mm 
  • Tube travel = 79mm
  • Focuser weight (with 1.25" adapter) = 861gm