Meridian Telescopes

P.O. Box 571 Mt. Clemens, MI 48046-0571

Description: FOC2SCT Crayford Focuser for Schmidt-Cassegrain Telescope
This Crayford focuser is an additional focuser for standard Meade and Celestron Schmidt-Cassegrain telescopes. The primary feature of this focuser is the ability to focus the telescope without the use of the main telescope focuser. Focusing at the visual back avoids the mirror shift problem that many SCTs exhibit. The other feature of this focuser is the 10:1 Micro-Adjust focus knob that provides a fine tuned focus for visual observing and is especially useful for CCD astrophotography.

Eyepiece Usage: 2" & 1.25" Adapter
Focuser Travel: 1.3" (33mm)
Travel per Revolution of Focuser Knob: 0.5" (13mm)
Travel per Rev. of Micro-Focuser Knob: 0.05" (1.3mm)

Racked-in Length Overall: 4.6" (117mm)
Racked-out Length Overall: 5.9" (150mm)
Fits Visual Back Thread: 2" diameter 24.4 threads per inch (50.8mm diameter 1.0mm pitch)
Weight: 2.13 lbs. (0.97kg)

Materials: Anodized machined aluminum body (black), anodized machined aluminum visual back adapter (black), machined aluminum draw tube, aluminum knobs, stainless steel hardware.

Other features:
10:1 Micro-Adjust focusing knob.
1.25" and 2" barrels have brass compression ring.
Adjustable tension for focusing.
Focuser lock holds focuser in position.
Made in Taiwan

Installation: Remove visual back adapter from the focuser assenbly by loosening three 5/64" set screws and pulling the adapter off the focuser body. Thread visual back adapter onto telescope visual back and tighten by hand only. Align focuser to telescope and slide focuser body into the visual back adapter and verify the focuser body is fully seated. Tighten the three set screws to secure the focuser body to the visual back adapter.

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