Celestron 94155 Manuel d'instruction

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FOCUS MOTOR FOR SCT & EDGEHD INSTRUCTION MANUAL

FOCUS MOTOR

FOR SCT & EDGEHD

INSTRUCTION MANUAL

ENGLISH • MODEL #94155

The Focus Motor for SCT & EdgeHD provides

hands-free focusing for Celestron Schmidt-

Cassegrain telescope (SCT) and EdgeHD telescope

optical tubes. This is a great convenience, especially

for astroimagers with remote telescope setups and

people who have dexterity issues that limit their ability

to use a focus knob.

The focus motor is compatible with all Celestron

SCTs from 6" to 14" in aperture that have

been produced since the year 2006; it is not

compatible with 5" SCTs or older models. It is

compatible with all EdgeHD optical tubes, the 8" and

36cm Rowe-Ackermann Schmidt Astrograph (RASA)

models, and the Celestron 7" Maksutov-Cassegrain.

The focus motor can also be used with the 11" RASA,

but requires the Focuser Retrofit Kit for the RASA 11

(#94255).

CHECKING CLEARANCES

The focus motor protrudes outward from the rear cell

of the telescope. After installation, check to make

sure the focus motor does not interfere with the

telescope's mount as it points to different parts of

the sky. Specifically, if using a fork mount that has

adjustable positioning of the optical tube on the fork,

such as the NexStar SE and NexStar Evolution mounts,

make sure the focus motor does not interfere with

the mount when pointed straight up (or at the pole if

using an equatorial wedge).

If it does interfere, simply reposition the telescope on

the fork mount until the focus motor clears the base.

The telescope may be a bit out of balance, but it should

not affect performance.

To prevent interferences, the focus motor orientation

relative to the telescope's rear cell can also be changed.

This is done by using a different set of mounting holes

to mount the focus motor onto the focuser cover plate,

or by rotating the cover plate itself. Refer to the Setup

Guide for more information.

ENGLISH

If using a Celestron computerized mount, the focus

motor can be powered by the mount, and allows

focus control from the telescope's hand control

or from a computer connected to the mount. If not

using a Celestron mount, the focus motor can be

controlled directly by a computer via a USB cable,

and is powered by the USB connection or an optional

12V DC power supply.

Please read through the entire instruction manual

before attempting to use the focus motor. The

manual will guide you through the various methods

of powering and controlling the focus motor. For

installation instructions, refer to the Setup Guide

included with the focus motor.