Orion EQ-1M, EQ-2M User Manual

INSTRUCTION MANUAL

Orion

EQ-1M & EQ-2M

Single-Axis DC Motor Drive Systems

#7826, #7827

Providing Exceptional Consumer Optical Products Since 1975

Customer Support [phone]
E-mail: [e-mail]

Corporate Offices [phone]

89 Hangar Way, Watsonville, CA 95076

IN 126 Rev. B 02/09

Welcome to a new world of adventure. The Orion EQ-1M and EQ-2M Single-Axis DC Motor Drive

Systems allow convenient hands-free tracking of the night sky for Orion EQ-1 and EQ-2 equatorial
mounts. The motor drive systems are also necessary components for doing any long-exposure astropho­tography with the mounts; they provide accurate sidereal tracking with an electronic hand controller for
making positional corrections to the right ascension axis of the mount when guiding an astrophoto.

Table of Contents

1. Parts List ............................................................................................................................... 2

2. Installing the EQ-1M Motor Drive System ............................................................................ 2

3. Installing the EQ-2M Motor Drive System ............................................................................ 3

4. Operation .............................................................................................................................. 3

5. Specifications ........................................................................................................................ 4

1. PARTS LIST

EQ-1M and EQ-2M
1 Motor drive assembly

1 Hand controller

1 Battery pack

EQ-1M only

1 2mm Allen wrench

1 4mm Allen wrench

2. Installing the EQ-1M
Motor

The EQ-1M Motor Drive System is intended for use with tele­scopes that utilize the Orion EQ-1 equatorial mount.

1. When facing the front of the mount, the right ascension

(R.A.) slow-motion control cable should be mounted on
the left end of the R.A. worm gear shaft (see Figure 1). If
it is mounted on the right end, remove it from the mount,
and reinstall it on the left end of the shaft.

R.A. slow-motion
control cable

Right end of R.A.
worm gear shaft

Figure 1. Orion EQ-1M mount with R.A. slow-motion control
mounted on left end of R.A. worm gear shaft.

Socket-

head bolt

Mounting bracket

Drive coupling

Socket-head
setscrew

Figure 2. The EQ-1M motor. The socket-head setscrew on the end
of the drive coupling connects the motor to the right end of the R.A.
worm gear.

2. Loosen the socket-head setscrew on the drive coupling
of the motor drive assembly (see Figure 2) using the pro­vided 2mm Allen wrench.

3. Use the provided 4mm Allen wrench and remove the
socket-head bolt on the right side of the equatorial mount
(see Figure 1).

4. Orient the motor drive so that the drive coupling slips over the
right end of the R.A. worm gear shaft. Now, attach the motor
to the mount by inserting the socket-head bolt through the
slot in the motor drive’s bracket, and rethreading it into the
mount.

5. Tighten the socket head setscrew on the end of the cou­pling. The setscrew should seat into the groove on the
end of the worm gear shaft. You may need to rotate the
worm gear, using the R.A. slow-motion control cable, for
the setscrew and the groove to line up. Once the setscrew
is tightened, the motor is engaged. When the motor is
engaged, never, under any circumstances, should you use
the R.A. slow-motion control cable! If you want to use the
R.A. slow-motion control cable, you must first loosen the
socket-head set screw on the end of the drive coupling.

The motor is now properly installed on the EQ-1 mount, and
should appear as in Figure 3.

Input

jack

22