2" Crayford Focusers for SCTs
These Crayford focusers supplement the SCT focuser that often
has backlash and causes image shift when focusing or tracking.
Two versions are available: The low profile #FSM1 can be rotated
by loosening a thumbscrew, and has 1 inch of travel, 3.4" minimum
height, 3.3" base diameter. The higher profile #FNS2 has 1-3/8"
drawtube travel, 4.2" minimum height, 3.5" base diameter, and has
setscrews for setting the rotation. Both versions thread onto the
male 2" SCT Schmidt threads on the rear cell of the scope.
Thread on our Crayford focuser and enjoy smooth operation, great
feel and precise adjustability. The draw tube and unified
compression ring visual back are machined from solid aluminum,
clear anodized, and ride on precision bearings and a roller shaft.
No grease or plastic glides! The 1/8" thick-wall drawtube is
internally baffled and anti-reflection blackened.
The bodies are black anodized machined aluminum and have
tension and lock controls that adjust the focuser anywhere from
a very light feel to fully locked. Whether it's a light eyepiece or
a heavy camera, control is smooth and precise, with no image
shift, backlash, stickiness or bumpy feel.
Click on images to enlarge
Prices include shipping in the USA!
Ordering Information
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