Bushnell 78-7876, 78-7846 User Manual
Lit. #: 91-0216/03-01
AUTOMATED TRACKING SYSTEM
78-7876 76mm RefLECtor
Instruction
Manual
78-7846 114mm RefLECtor
2.
WHERE DO I START?
Your Bushnell telescope can bring the wonders of the universe to your eye. While
this manual is intended to assist you in the set-up and basic use of this instrument,
it does not cover everything you might like to know about astronomy. Although
Northstar will give a respectable tour of the night sky, it is recommended you obtain
a very simple star chart and a flashlight with a red bulb or red cellophane over the
end. For objects other than stars and constellations, a basic guide to astronomy is
a must. Some recommended sources appear on our website at www.bushnell.com.
Also on our website will be current events in the sky for suggested viewing. But,
some of the standbys that you can see are:
The Moon—A wonderful view of our lunar neighbor can be enjoyed with any
magnification. Try viewing at different phases of the moon. Lunar highlands, lunar
maria (lowlands called "seas" for their dark coloration), craters, ridges and
mountains will astound you.
Saturn—Even at the lowest power you should be able to see Saturn’s rings and
moons. This is one of the most satisfying objects in the sky to see simply because
it looks like it does in pictures. Imagine seeing what you’ve seen in textbooks or
NASA images from your backyard!
Jupiter—The largest planet in our solar system is spectacular. Most noted features
are its dark stripes or bands both above and below its equator .These are the north
and south equatorial belts. Also interesting are Jupiter’s four major moons. Pay
close attention to their positions from night to night. They appear to be lined up on
either side of Jupiter.
Mars—The Great Red Planet appears as a reddish-orange disk. Look at different
times of the year and try to catch a glimpse of the white polar ice caps.
Ve n u s—Just like the moon, Venus changed phases from month to month. Some views
of brilliant Venus appear as if you were looking at a distant crescent moon.
N e b u l a e—The Great Orion Nebula is a very well known night sky object. This and many
others are brought to you by this telescope.
Star Clusters— View millions of stars densely packed in a cluster that resembles a ball.
G a l a x i e s—One of the greatest and most interesting galaxies is our neighbor, the
Andromeda Galaxy. Enjoy this and many others.
3.
78-7876 76mm Reflector
Parts Diagrams
1. Wide Field Finderscope
2. Telescope Main Tube
3. Primary Mirror (Internal)
4. Fine Adjustment Cables
5. Latitude Lock Knob
6. Horizontal Axis Lock Knob
7. Tripod Leg
8. Accessory Tray Brace
9. Quick-Release Accessory Tray
4.
Telescope Parts Diagram
10. Quick-Release Tripod Leg Lever
11. Declination Lock Knob
12. Counterweight Shaft
13. Counterweight
14. Fine Adjustment Cables
15. Right Ascension Lock Knob
16. Rack and Pinion Focusing Mechanism
17. Eyepiece
18. Finderscope Mount
Parts Diagrams (Continued)
1. Wide Field Finderscope
2. Cradles
3. Telescope Main Tube
4. Primary Mirror (Internal)
5. Latitude Lock Knob
6. Tripod Leg
7. Accessory Tray Brace
8. Quick-Release Accessory Tray
9. Quick-Release Tripod Leg Lever
10. Declination Lock Knob
11. Counterweight Shaft
12. Counterweight
13. Fine Adjustment Cables
14. Rack and Pinion Focusing Mechanism
15. Eyepiece
16. Finderscope Mount
Telescope Parts Diagram
78-7846 114mm Reflector
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