Orion 120 EQ instruction manual Tube rings Objective lens cell Dew cap/ lens shade

Models: 120 EQ

1 16

Page 2

Objective lens cell

Dew cap/ lens shade

Right Ascension slow-motion control (not visible)

Declination lock lever Latitude adjustment T-bolts

Counterweight shaft

Small counterweight

Large counterweight

Counterweight lock thumbscrews “Toe saver” retaining bolt

Azimuth fine adjustment knobs

Tripod leg

Accessory tray bracket attachment point Accessory tray bracket Accessory tray

Leg lock knob

Finder scope

Finder bracket

Eyepiece

Star diagonal Focus knob Declination slow-motion control

Right Ascension lock lever

Polar axis finder scope

Figure 1. The AstroView 120 EQ Refractor

Image 2

Contents

#9026 Equatorial Refracting Telescope OrionAstroView 120 EQ Customer SupportTube rings Objective lens cell Dew cap/ lens shade Table of Contents 1. Parts List2. Assembly containing time 3. Balancing the TelescopePointer alignment screw4. Aligning the Finder Scope ascension 5. Setting Up and Using the Equatorial Mountpolar axisThe Polar Axis Finder Scope Aligning the Polar Axis Finder ScopeUsing the Polar Axis Finder Finding Objects With the Setting Circles Understanding the Setting CirclesCalibrating the Right Ascension Setting Circle Tracking Celestial ObjectsCooling the Telescope 6. Using Your Telescope- Astronomical ObservingChoosing an Observing Site Aiming the TelescopeCalculating the Magnification Focusing the TelescopeDo You Wear Eyeglasses? Magnification = Telescope Focal Length mm Eyepiece Focal Length mmB. The Planets How to Find Interesting Celestial ObjectsA. The Moon C. StarsMoon Photography 7. AstrophotographyD. Deep-Sky Objects Planetary Photography8. Terrestrial Viewing 9. Care and Maintenance10. Specifications Cleaning the OpticsOrion Telescopes & Binoculars Customer Support Help Line 800 676-1343 Day or EveningOne-Year Limited Warranty Post Office Box 1815, Santa Cruz, CA