background image

Dec. setting circle

R.A. setting circle

Counterweight

Counterweight lock knob

Counterweight shaft

R.A. slow-motion control cable

Accessory tray

Accessory tray bracket

Accessory tray bracket

attachment point

Leg lock knob

2

Figure 1. EQ-2 Mount

C

ongratulations on your purchase of a quality Orion product. Your new EQ-2 Equatorial Mount was

designed to work with many different telescope optical tubes. Designed for astronomical use, this preci-
sion mount allows convenient manual “tracking” of celestial objects as they move slowly across the sky,
so they remain within your eyepiece’s field of view. The setting circles will assist you in locating hundreds
of fascinating celestial denizens, including galaxies, nebulas, and star clusters, from their catalogued
coordinates. With a little practice and a little patience, you’ll find that your EQ-2 Equatorial Mount is an
invaluable tool for getting the most out of your astronomical observing sessions. 

These instructions will help you set up and properly use your equatorial mount. Please read them over
thoroughly before getting started.

Latitude lock t-bolt

Latitude adjustment t-bolt

Dec. slow-motion control cable

Azimuth lock knob

Summary of Contents for EQ-2

Page 1: ...719 Providing Exceptional Consumer Optical Products Since 1975 Customer Support 800 676 1343 E mail support telescope com Corporate Offices 831 763 7000 P O Box 1815 Santa Cruz CA 95061 Orion EQ 2 Equatorial Mount 9828 Equatorial Mount ...

Page 2: ...of celestial objects as they move slowly across the sky so they remain within your eyepiece s field of view The setting circles will assist you in locating hundreds of fascinating celestial denizens including galaxies nebulas and star clusters from their catalogued coordinates With a little practice and a little patience you ll find that your EQ 2 Equatorial Mount is an invaluable tool for getting...

Page 3: ... each leg should face inward 2 Tighten the leg lock knobs on the bottom braces of the tri pod legs For now keep the legs at their shortest fully retracted length you can extend them to a more desir able length later after the telescope is completely assembled 3 With the tripod legs now attached to the equatorial mount stand the tripod upright be careful and spread the legs apart enough to connect ...

Page 4: ...ing the thumb screw on the end of the cable over the indented slot on the worm gear shaft and then tightening the thumb screw We recommend that the shorter cable be used on the R A worm gear shaft and the longer cable on the Dec worm gear shaft The equatorial mount is now fully assembled and should appear as shown in Figure 1 3 Attaching A Telescope The EQ 2 Equatorial Mount is designed to hold sm...

Page 5: ...by the Earth s rotation from west to east An equatorial mount Figure 2 is designed to compensate for that motion allowing you to easi ly track the movement of astronomical objects thereby keeping them from drifting out of the telescope s field of view while you re observing This is accomplished by slowly rotating the telescope on its right ascension R A axis using only the R A slow motion cable Bu...

Page 6: ...hould now be able to use the Dec slow motion control cable again to fine adjust the telescope s position Tracking Celestial Objects When you observe a celestial object through the telescope you ll see it drift slowly across the field of view To keep it in the field if your equatorial mount is polar aligned just turn the R A slow motion control cable clockwise The Dec slow motion control cable is n...

Page 7: ... of the celestial equator Dec 0 and negative when the telescope is pointing south of the celestial equa tor Retighten the lock knob 2 Loosen the R A lock knob and rotate the telescope until the R A value from the star atlas matches the reading on the R A setting circle Remember to use the lower set of num bers on the R A setting circle Retighten the lock knob Most setting circles are not accurate ...

Page 8: ...RA and Dec axes Setting circles RA scaled in 10 min increments Dec scaled in 1 increments for N or S Hemisphere Polar axis latitude adjustment 5 to 75 One Year Limited Warranty This Orion Product is 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 peri...

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