Related Manuals for Bushnell Northstar 78-7846
Summary of Contents for Bushnell Northstar 78-7846
- Page 1 Lit. #: 91-0216/03-01 AUTOMATED TRACKING SYSTEM 78-7876 76mm RefLECtor Instruction Manual 78-7846 114mm RefLECtor...
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Page 3: Where Do I Start
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... - Page 4 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 78-7876 76mm Reflector Telescope Parts Diagram 10.
- Page 5 78-7846 114mm Reflector Telescope Parts Diagram 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 Parts Diagrams (Continued) 9. Quick-Release Tripod Leg Lever 10.
- Page 6 QUICK ASSEMBLY DIAGRAM 78-7876 76mm Reflector Step 4 Step 5 Step 1 Step 3 Step 2 I M P O RTA N T: READ THROUGH A S S E M B LY INSTRUCTION BEFORE YOU A S S E M B L E YOUR T E L E S C O P E .
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Page 7: Parts List
78-7846 76mm Reflector Step 1 Step 2 • Adjustable Aluminum Tripod Assembly (Three Legs) • Quick Release Accessory Tray • Reflector Telescope Assembly • Equatorial Mount Step 4 Step 3 PARTS LIST • Wide Field Finderscope • 20mm 1.25" Diameter Eyepiece •... - Page 8 Cradles. Locate the Finderscope with pre-assembled Finderscope Mount. Remove the two nuts located near the front of the telescope (closet to the eyepiece) and place the Finderscope and Finderscope Mount over the exposed screws. Replace the nuts, and securely tighten the Finderscope and Finderscope Mount in place.
- Page 9 20 mm lens. Note: the base power of each eyepiece is determined by the focal length of the telescope objective lens. A formula can be used to determine the power of each e y e p i e c e: telescope OBJECTIVE lens focal length divided by EYEPIECE focal length = MAGNIFICATION (e.g.
- Page 10 By aligning the telescope’s polar axis at celestial North, you will place the telescope in parallel with the earth’s axis and thus be able to locate stars in the sky based on star atlas information.
- Page 11 Telescope Parts Diagram 1. ATS Motor Housing 2. ATS Drive Shaft – set screw 3. ATS Drive Shaft 4. Gear Coupler 5. Plastic Adapter 78-7876 76mm Reflector 6. Fine Adjustment Cable 7. Gear coupler – set screw 8. Plastic Adapter – set screw 9.
- Page 12 3. ATS Drive Shaft 4. Gear Coupler 5. Plastic Adapter Parts Diagrams (Continued) 78-7846 114mm Reflector Telescope Parts Diagram 6. Fine Adjustment Cable 7. Gear coupler – set screw 8. Plastic Adapter – set screw 9. Right ascension axis shaft...
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Page 13: Changing Batteries
Push and hold this button to turn the unit off. The default motion is set for the Northern Hemisphere. FWD/REV (FORWARD/REVERSE)--By pushing this button you automatically reverse the direction of the Automated Tracking System. This can be used to switch tracking direction for the Southern Hemisphere or to back up the telescope in its tracking motion. - Page 14 Saturn, Mars, Jupiter, and Venus are good second steps to take. 2. The first thing you need to do after assembling the telescope as planned is center the desired object in the finderscope’s crosshairs. Provided you did a reasonable job aligning the finderscope, a quick look through the main telescope tube at low power should reveal the same image.
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Page 15: Helpful Hints
1 . Your telescope is a very sensitive instrument. For best results and fewer vibrations set your telescope up on a level location on the ground rather than your concrete driveway or your wooden deck. This will provide a more stable foundation for viewing, especially if you’ve drawn a crowd with your new telescope. -
Page 16: Warranty Repair
Your Bushnell ® telescope is warranted to be free of defects in materials and workmanship for the lifetime of the original owner. The Lifetime Limited Warranty is an expression of our confidence in the materials and mechanical workmanship of our products and is your assurance of a lifetime of dependable service.