User manual ORION TELESCOPES & BINOCULARS EQ-1M EQ-2M DRIVES

[. . . ] 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. If it is mounted on the right end, remove it from the mount, and reinstall it on the left end of the shaft. Figure 2. The socket-head setscrew on the end of the drive coupling connects the motor to the right end of the R. A. Use the provided 4mm Allen wrench and remove the socket-head bolt on the right side of the equatorial mount (see Figure 1). [. . . ] When the motor is engaged, never, under any circumstances, should you use the R. A. slow-motion cable by rotating the clutch mechanism on the mount clockwise. The clutch mechanism pushes the motor down, and separates the motor gear from the circular gear. Re-engage the motor by rotating the clutch mechanism counter-clockwise; the spring will then pull the motor back up, which causes the motor gear and the circular gear to mesh properly once again. If the spring does not pull the motor up so that the gears mesh, the locking T-bolt is probably too tight. The motor is now properly installed on the EQ-2 mount, and should appear as in Figure 6. Clutch mechanism Motor mounting shaft Spring Figure 4. Orion EQ-2 mount comes with many parts of the EQ-2M Motor Drive System preinstalled. 2. Loosen the motor's locking T-bolt and slide the cylinder of the motor housing onto the shaft. Make sure that the small gear on the motor is just underneath the circular gear on the end of the R. A. Tighten the locking T-bolt; the end of the T-bolt should seat into the groove in the motor mounting shaft. Connect the spring (Figure 6) on the motor housing to the knurled setscrew underneath the R. A. Now, stretch the spring and slide its end ring over the knurled head of the set screw and onto the threads. If you are having trouble stretching the spring with your fingers, try using a pair of pliers around the body of the spring. Figure 6. Orient the batteries as indicated on the white plastic battery holder. Connect the end of the battery pack's power cord to the DC power input on the hand controller. Connect the hand controller plug into the input jack (Figure 2) on the motor. For the motor drive system to work properly, the equatorial mount must be polar-aligned. axis of the mount so it is parallel to the Earth's axis of rotation (polar axis). Consult the manual that came with your equatorial mount for details on how to polar-align it. 3 For observers in the Northern Hemisphere, the N/S switch on the hand controller should be in the "N" position, and should be in the "S" position for Southern Hemisphere observers. [. . . ] Note that whenever any of the four buttons on the hand controller are pressed, the LED in the center of the hand controller will shine red; when the button is released, the LED will shine green again. 5. Specifications EQ-1M Guiding rate: 100% sidereal Centering rate: 800% sidereal Power requirement: 6V DC Battery type: four D-cell Northern or Southern Hemisphere operation Externally clutched EQ-2M Guiding rate: 100% sidereal Centering rate: 400% sidereal Power requirement: 6V DC Battery type: four D-cell Northern or Southern Hemisphere operation Externally clutched One-Year Limited Warranty This Orion EQ-1M & EQ-2M Motor Drives are warranted against defects in materials or workmanship for a period of one year from the date of purchase. This warranty is for the benefit of the original retail purchaser only. During this warranty period Orion Telescopes & Binoculars will repair or replace, at Orion's option, any warranted instrument that proves to be defective, provided it is returned postage paid to: Orion Warranty Repair, 89 Hangar Way, Watsonville, CA 95076. [. . . ]