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Focuser Crayford 2" 10-1 SCT


Crayford 2" 10:1 Micro Focuser for Schmidt-Cassegrain

This Crayford design focuser connects to a standard Schmidt-Cassegrain thread. Eliminates the need for focusing with the primary mirror. CNC machined from strong aluminum with a black anodized finish, the drawtube glides on 4 bearing wheels with 25mm travel, 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.

  • Minimum focuser height (with 1.25" adapter) = 109mm
  • Maximum focuser height (with 1.25" adapter) = 134mm
  • Minimum focuser height (without 1.25" adapter) = 99mm
  • Maximum focuser height (without 1.25" adapter) = 124mm
  • Tube travel = 25mm
  • Focuser weight (with 1.25" adapter) = 751gm

Telescope Adapter Ring M42/0.75
Diameter of 6 x M3 screw locations 54mm
Compatible Device QHY(IC)90A, QHY(IC)695A QHYCFW2-S
Suitable CCD SIZE Up to 4/3 inch
Weight 127g