GSO 1.25" Crayford Focuser for Newtonians & Dobsonians (7-9" tubes)
This solid GSO Crayford focuser can transform your scope into
a dream machine! The factory focuser is the weakest link in most
imported scopes. Sticky grease, rough racks, shims and springs
for crude adjustment, and bad feel are common.
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,
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, stickyness or bumpy feel.
Accepts 1.25" barrels, brass compression ring for retention. The
curved base is 2.8" square with 4 mounting holes. Base curve is for
176mm diameter, works well with 7-9" diameter tubes. Minimum
height (scope tube to eyepiece) is 3", maximum 4.8", 1.8" drawtube
travel, weighs 15 oz. Focuser body can be set at a rotated angle in
the base. Drawtube outer diameter is 1.8".
The eyepiece adapter can be removed, exposing female T-threads.
With the eyepiece adapter removed, minimum height is 2.2" scope
tube to T-threads. With the eyepiece adapter removed, the drawtube
can pass completely thru the focuser body, potentially falling inside
the scope. An ABS stop washer is included with the focuser to use
with T-thread adapters to prevent the drawtube from dropping thru
the focuser body.
The #TEMM adapter (sold separately below), when used with the
eyepice adapter removed and the stop washer in place, provides
male T-threads for camera and accessory attachment, with 3/4"
lower profile than using the #TADP with the eyepiece adapter
The #TADP adapter (sold separately below), when used with the
eyepiece adapter installed, provides male T-threads for camera and
Click on image to enlarge
Prices include Priority shipping in the USA!
#FCN1 on a GSO 6" f/8 Dobsonian - Thanks Mike T!