2" Crayford Linear Bearing Focusers for
Refractors, Newts and SCTs
These solid GSO 2 speed Linear Bearing Crayford focusers can
transform your scope into a dream machine! The factory focuser
is the weakest link in most imported scopes, and these linear
bearing focusers are a giant leap up, with higher weight capibility,
ridgidity and smoothness than the standard GSO Crayfords.
Bolt 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.
The 1/8" thick-wall drawtube is internally baffled and anti-reflection
The linear bearing is precision ground from hard steel for precise
operation. 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,
stickyness or bumpy feel.
The Refractor Linear Bearing Crayford Focusers have 2" travel, the
flange outside diameter is 3.4" to fit 3.5" OD tubes, drilled and tapped
for three M4 screws. Weighs 1.9 lbs. Fits AT-1010 and NightHawks
perfectly! Minimum in-focus length from scope tube to 2" barrel is 3.6".
Rotatable, single thumbscrew to lock rotation.
Adapter rings for refractor Crayfords are available for 3.8", 4.4" and
5.4" ID tubes for Synta Refractors (Skywatcher, Celestron, Orion,
Konus, Etc.), Meade AR5 and AR6 and Antares 1208, 12012. With
stainless steel hardware. Adapter rings are only available purchased
with a focuser! Please note, due to the oddly long drawtubes on the
Meade AR5 and AR6 refractor factory focusers, an extension is often
required with replacement focusers in order to achieve focus. Our
#ET35 extension is a good choice for most applications.
The Newtonian/Dobsonian Linear Bearing Crayford Focusers have 2"
travel and weigh 1.75 lbs. Minimum in-focus length from scope tube
to 2" barrel is 3". The removable base is 3.5" square. Mounting hole
pattern is 2-3/4" x 2-7/8. Available with bases for 8-10" and 12"
tubes, a flat base, or with an adapter ring for Orion Newt 2 piece
#FNL8 replaces the focuser on Orion Dobs and Newts that have two
piece focusers, and allows focuser leveling like the factory focuser.
Does not fit the two piece focusers that have tabs on the focusers
and gaps in the base, see photos below. Does not include base!
The SCT Linear Bearing Crayford Focusers have 2" travel and weigh
2 lbs. Minimum height from the back of the SCT is 4.6". Rotatable,
with rotation lock knob. Has female 2" Schmidt threads.
#RDPC is the finder mounting shoe for Orion/Synta style finder
bases, mounts on the Refractor Crayford Focuser in existing holes,
no drilling. Fits on left or right side. Aluminum base with stainless
Click on images to enlarge:
Prices include shipping in the USA!
If your Orion two speed focuser base looks like this:
Then #FNL8 will replace the stock focuser. (Click to enlarge)
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